Function Overloading in C++ With Examples -2022 (2023)

Function Overloading in C++ With Examples -2022 (1)

What is Function Overloading in C++?

Two or more functions can have the same name but different parameters; such functions are called function overloading in c++. The function overloading in the c++ feature is used to improve the readability of the code. It is used so that the programmer does not have to remember various function names. If any class has multiple functions with different parameters having the same name, they are said to be overloaded. If we have to perform a single operation with different numbers or types of arguments, we need to overload the function.

If I say parameter list, it means the data type and sequence of the parameters. For example, the parameters list of a function myfunction (int a, double b) is (int, double), which is different from the function myfunction (double a, int b) parameter list (double, int). Function overloading is a compile-time polymorphism. As we already know what a parameter list is, so let’s see the rules of overloading: we can have the following functions in the same scope.

sum(int a, int b)sum(int a, int b, int c)

The easiest way to remember this rule is that the parameters should qualify any one or more than one of the following conditions:

  • They should have a different type
  • They should have a different number
  • They should have a different sequence of parameters.

To put it simply,

Function overloading in c++ can have the same name but different parameters

  1. What is Function Overloading in c++?
  2. Function Overloading in C++Example
  3. Why is function overloading in c++ is used?
  4. Rulesof Function Overloading in C++
  5. What is the difference between function overloading and overriding in C++?
  6. Causes of function overloading
  7. Advantages of Function Overloading in c++
  8. Disadvantages of Function Overloading in c++
  9. Difference between Function Overloading and Operator Overloading
  10. Difference between Function Overloading and Function Overriding
  11. Function overloading in C++ FAQs
  12. Conclusion

C++ has many features, and one of the most important features is function overloading. It is a code with more than one function with the same name having various types of argument lists. This argument list includes the data type of arguments and the sequence of the arguments.

Function Overloading in C++ Example

Example 1:

#include <iostream>using namespace std; void SumNum(int A, int B);void SumNum(int A, int B, int C);void SumNum(int A, int B, int C, int D); int main(){ SumNum(1,2); SumNum(1,2,3); SumNum(1,2,3,4); return 0;} void SumNum(int A, int B){ cout<< endl << "SUMNUM is : "<< A+B; } void SumNum(int A, int B, int C){ cout<< endl << "SUMNUM is : "<< A+B+C; } void SumNum(int A, int B, int C, int D){ cout<< endl << "SUMNUM is : "<< A+B+C+D; }
Output:SumNum is 3SumNum is 6SumNum is 10

Example 2:

#include <iostream>using namespace std;class Addition { public: int sum(int a,int b) { return a+b; } int sum(int a,int b, int c) { return a+b+c; } };int main(void){ Addition obj; cout<<obj.sum(20, 15)<<endl; cout<<obj.sum(81, 100, 10); return 0;} 
Output :35191

Why is function overloading in C++ is used?

Function overloading is similar to polymorphism that helps us to get different behavior, with the same name of the function. Function overloading in c++ is usedfor code reusability and to save memory.

Rulesof Function Overloading in C++

Different parameters or three different conditions :

1. These functions have different parameter type

sum(int a, int b)sum(double a, double b)

2. These functions have a different number of parameters

(Video) Buckys C++ Programming Tutorials - 30 - Function Overloading

sum(int a, int b)sum(int a, int b, int c)

3. These functions have a different sequence of parameters

sum(int a, double b)sum(double a, int b)

The above three cases are valid cases of overloading. We can have any number of functions, but remember that the parameter list must be different. For example:

int mul(int, int)double mul(int, int)

As the parameter list is the same, this is not allowed. Even though their return types are different, it’s not valid.

What is the difference between function overloading and overriding in C++?

Function OverloadingFunction Overriding
DefinitionWhen two or more methods in a class have distinct parameters but the same method name, this is known as function overloading.One method is in the parent class and the other is in the child class when a function is overridden, but they have the same parameters and method name.
Function signatureThere should be a difference in the number or kind of parameters.The function signature should not change.
Behaviourdefines several methods’ behaviours.changes the way the procedure behaves.
Scope of FunctionThey belong to the same category.They have a distinct range.
InheritanceEven without inheritance, it can happen.Only when a class inherits from another does it happen
PolymorphismCompile TimeRun Time
Techniquecode improvement method.method for replacing code.

Function overloading and ambiguity

The C++ programming language offers an overloading feature that enables an overload of two or more methods with the same name but distinct parameters in order to create compile-time polymorphism. Function and operator overloading can be used to carry it out. While operator overloading overloads operators to provide user-defined data types with particular meaning, function overloading overloads two or more functions with the same name but distinct parameters.

Using built-in operators on user-defined types is made possible by this feature. Operator overloading makes the code easier to understand by redefining the functionality to meet user needs. Both function overloading and operator overloading will be discussed in detail as well as how they are applied in C++ in this article.

Using the Overloading idea, C++ enables the creation of flexible and understandable code. It enables adding different functionality to the existing code with a minimum number of changes, hence minimising the need for duplicate code. Practically speaking, C++ allows two basic types of overloading.

Function Overloading, a feature of C++, allows us to create functions with the same name but different datatypes or numbers of arguments supplied to them. Developers can define functions with the same name within the same scope thanks to this capability. The functions that have a name also share the same behaviour, enabling compile-time polymorphism. One benefit of function overloading is that it makes the code easier to read.

The use of arguments can be used in any way to create function overloading. Usage of parameters might refer to a particular parameter type, a parameter count, or a parameter sequence. As a result, a function defined as calc (float x, int y) is different from calc (int x, float y), which has separate parameters with a different datatype.

Types of function overloading in c++

There are two types of function overloading in c++-

  • Compile time overloading– In compile time overloading, functions are overloaded using different signatures. Signature of a function includes its return type, number of parameters and types of parameters.
  • Runtime overloading -In runtime overloading, functions are overloaded using different number of parameters.

Causes of function overloading in c++

  • Type Conversion.
  • Function with default arguments.
  • Function with a pass by reference.

1. Type Conversion

Program :

#include<iostream>using namespace std;void function(float);void function(int);void function(float x){std::cout << "Value of x is : " <<x<< std::endl;}void function(int y){std::cout << "Value of y is : " <<y<< std::endl;}int main(){function(3.4);function(34);return 0;}

Output :

Function Overloading in C++ With Examples -2022 (2)

This example shows an error “call of overloaded ‘function’ is ambiguous”. According to our prediction, function (3.4) will call the first function, and function (34) will call the second function. But this is not what happens because, in C++, all the floating-point constants are not treated as float; instead, they are treated as double. If we replace the float variable with a double variable, the program will work properly. Thus we call it a type conversion error from float to double.

2. Function with Default Arguments

Program :

(Video) Function Overloading with Examples in C++ | C++ Tutorials for Beginners #19

#include<iostream>using namespace std;void function(int);void function(int,int); void function(int x){std::cout << "Value of x is : " <<x<< std::endl;}void function(int y,int z=12){std::cout << "Value of y is : " <<y<< std::endl;std::cout << "Value of z is : " <<z<< std::endl;}int main(){function(12);return 0;}

Output :

Function Overloading in C++ With Examples -2022 (3)

The above example shows an error saying “call of overloaded ‘fun(int)’ is ambiguous”, this is because function(int y, int z=12) can be called in two ways:

By calling the function with only one argument (and it will automatically take the value of z = 12)

By calling the function with only two arguments.

When you call the function: function(12), we full fill the condition of both function(int) and function(int, int); therefore, the compiler gets into an ambiguity that gives an error.

3. Function with a Pass by Reference

Program :

#include <iostream>using namespace std;void function(int);void function(int &);void function(int a){std::cout << "Value of a is : " <<a<< std::endl;}void function(int &b){std::cout << "Value of b is : " <<b<< std::endl;} int main(){int x=10;function(x);return 0;}

Output :

Function Overloading in C++ With Examples -2022 (4)

The above program shows an error saying “call of overloaded ‘fun(int&)’ is ambiguous”. As we see, the first function takes one integer argument, and the second function takes a reference parameter as an argument. In this case, the compiler cannot understand which function is needed by the user as there is no syntactic difference between the fun(int) and fun(int &); therefore, it shoots an error of ambiguity.

Overloading using different types of parameters

#include <iostream>using namespace std; void printValue(int A);void printValue(char A);void printValue(float A); int main(){ printValue(10 ); printValue('@' ); printValue(3.14f ); return 0;} void printValue(int A){ cout<< endl << "Value of A : "<< A; } void printValue(char A){ cout<< endl << "Value of A : "<< A; } void printValue(float A){ cout<< endl << "Value of A : "<< A; }
Output:Value of A : 10Value of A : @Value of A : 3.14

Function overloading can be implemented based on the many types of arguments that are passed into the function. Both non-member functions and member functions of a class may implement function overloading.

Function overloading by changing the number of arguments

On the basis of the quantity of parameters supplied into the function, we can implement function overloading. Both non-member functions and member functions of a class may implement function overloading.

#include <iostream>using namespace std; void SumNum(int A, int B);void SumNum(int A, int B, int C);void SumNum(int A, int B, int C, int D); int main(){ SumNum(1,2); SumNum(1,2,3); SumNum(1,2,3,4); return 0;} void SumNum(int A, int B){ cout<< endl << "SUMNUM is : "<< A+B; } void SumNum(int A, int B, int C){ cout<< endl << "SUMNUM is : "<< A+B+C; } void SumNum(int A, int B, int C, int D){ cout<< endl << "SUMNUM is : "<< A+B+C+D; }
Output:SumNum is 3SumNum is 6SumNum is 10 

In this way of function overloading, we define two functions of the same type but with a different number of parameters with the same names. For example, in the program given below, we have made two add() functions to return the sum of two and three integers.

// first function definitionint add(int a, int b){cout << a+b;}// second overloaded function definitionint add(int a, int b, int c){cout << a+b+c;}

Here add() function is said to be overloaded, as it has two definitions, one that can accept two arguments and another which can accept three arguments. Which add() function will be called, depending on the number of arguments.

int main() { add(10, 20); // add() with 2 parameter add(10, 20, 30); //sum() with 3 parameter }

Program ( By changing the number of arguments):

(Video) C++ FUNCTIONS (2020) - What is function overloading? PROGRAMMING TUTORIAL

#include <iostream>using namespace std;int add(int a, int b){cout << a+b <<endl;return 0;}int add(int a, int b, int c){cout << a+b+c <<endl;return 0;}int main(){add(20, 40);add(40, 20, 30);}
Output:60 90

In the above example, we overload an add() function by changing the number of arguments. First, we define an add() function with the two parameters, and then we can overload it by again defining an add() function but this time with three parameters.

Function overloading by different types of arguments

In this method, we define two or more functions with the parameters of different data types but with the same number of parameters with the same name. For example, in this program, we have three add() functions; the first one will get two integer arguments, the second one will get two float arguments, and the third one will get two double arguments.

Program :

#include <iostream>using namespace std;int add(int x, int y) // first definition{cout<< x+y << endl;return 0;}float add(float a, float b){cout << a+b << endl;return 0;}double add(double x, double y){cout << x+y << endl;return 0;}int main(){add(20, 40);add(23.45f, 34.5f);add(40.24, 20.433);}
Output :6057.9560.673

In the above example, we define an add() function three times. First, using integers as parameters, secondly, using float as parameters, and third using double as a parameter.

Therefore we override the add() function twice.

Advantages of Function Overloading in c++

  • The program is very simple and also easier to understand.
  • It saves the memory space, maintains consistency, makes clear interface for methods regardless of the parameter’s type and readability of the program.
  • Using the function overloading concept, we can develop more than one function with the same name, but the arguments passed should be of different types.
  • Function overloading executes the program faster.
  • Function overloading is used for code reusability and to save memory.

To understand function overloading in C++ clearly, you must be well-versed in C++. If you wish to enhance your skills, you can take up the Introduction to C++ free course at Great Learning Academy and learn the basic concepts and fundamentals of C++ to help you build expertise in the subject.

Disadvantages of Function Overloading in c++

  • Function declarations that differ by their return type cannot be overloaded with the function overloading process.
  • If any static member function is declared, then the same parameters or the same name types cannot be overloaded.

Difference between Function Overloading and Operator Overloading

Function OverloadingOperator Overloading
Function overloading allows us to call it in multiple ways.Operator overloading allows operators to have their extending meaning beyond its predefined operational meaning.
You can overload the function with the same name but with different parameters.You can overload (define custom behaviour) for operators such as ‘+’, ‘-‘, ‘()’, ‘[]’.
Function overloading means using a single name and giving more functionality to it.Operator overloading means adding extra functionality for a certain operator.
When an operator is overloaded, the operator has different meanings, which depend on the type of its operands.When a function is overloaded, the same function name has different interpretations depending on its signature, which is the list of argument types in the functions parameter list.

If you want to learn more about operator overloading visit Operator Overloading in C++.

Difference between Function Overloading and Function Overriding

Function OverloadingFunction Overriding
DefinitionIn function overloading, two or more methods in one class have different parameters but the same method name.In function overriding, two methods have the same parameters, and method name, but one method is in the parent class and the other is in the child class.
Function SignatureEither type of parameters or the number of parameters should differ.Function signature should remain the same.
BehaviorDefines multiple behaviors to a method.Changes the behavior of the method.
Scope of FunctionThey are in the same scope.They are in different scope.
InheritanceIt can occur without inheritance.It occurs only when one class is inherited from another class.
PolymorphismCompile TimeRun Time
TechniqueCode refinement techniqueCode replacement technique
No. of ClassesOnly one class is required.Minimum two classes are required.

Function overloading in C++ FAQs

What is function overloading in C++?

Function overloading refers to when two or more functions with the same name but distinct parameters exist.
Function overloading is one of the most crucial characteristics of C++, among its many other features. There are many functions with the same name in this code, each with a unique set of argument lists. The data type and ordering of the arguments are also included in this argument list.
The C++ function overloading feature is used to make the code easier to read. It is used to save the programmer from having to memorise different function names. Overloaded functions are those that belong to a class but have more than one instance with the same name but different parameters. The function must be overloaded if a single operation must be performed with various numbers or types of parameters.
Function overloading is referred to as a function of polymorphism in OOP.

What is function overloading explain?

(Video) Function Overloading (FUNCTION IN C++ - PART 4) -15

Similar to polymorphism, function overloading enables us to obtain different behaviour while maintaining the function’s name. In C++, function overloading is used to reduce memory usage and increase code reuse.

What is runtime polymorphism C++?

Late binding and dynamic polymorphism are other names for runtime polymorphism. The function call is resolved at runtime in runtime polymorphism. In contrast, with compile time or static polymorphism, the compiler determines which function call to bind to the object after deducing it at runtime.

What is inheritance in C++?

By using inheritance, existing classes can be extended and reused without being changed, creating hierarchical links between them. A class can be embedded into an object via inheritance. Let’s say you include a class A object of type x in the class specification of type B.

What are the advantages of function overloading?

The fundamental benefit of function overloading is that it makes code easier to read and reuse.
Function overloading is used to improve consistency, readability, and memory efficiency.
The program’s execution is accelerated by it.
Additionally, code upkeep becomes simple.
Function overloading gives code flexibility.
The function’s versatility avoids the need for many function names to conduct the same set of functions.

Conclusion

Function overloading in C++ can be used in different ways to enhance code readability. While doing programming in C++, it helps to save compile time and also saves memory space. You also learned how similar operations are performed using the function overloading concept.

You can enhance your function overloading in c++ concepts here:

Source: GreatLearning Blog

(Video) C++ Programming Tutorial 69 - Intro to Function Overloading

Related

FAQs

What is function overloading in C++ explain with example? ›

Function overloading is a feature of object-oriented programming where two or more functions can have the same name but different parameters. When a function name is overloaded with different jobs it is called Function Overloading.

What is function overloading give an example of function overloading? ›

Function overloading is a C++ programming feature that allows us to have more than one function having same name but different parameter list, when I say parameter list, it means the data type and sequence of the parameters, for example the parameters list of a function myfuncn(int a, float b) is (int, float) which is ...

What is function overloading in C++ PDF? ›

C++ allows you to specify more than one definition for a function name or an operator in the same scope, which is called function overloading and operator overloading respectively.

What is function overloading with syntax and example? ›

Function overloading is a feature of object-oriented programming, which allows two or more functions to be created with the same name but with different arguments (different number of arguments or different data types of arguments). For example : // Function with the same name and different arguments.

What is function in C++ with example? ›

A function is a code module that performs a single task. Some examples such as sorting, search for a given item, and invert a square matrix. Once a function is created it is tested extensively. After this, it becomes a part of the library of functions.

What is function overloading explain? ›

An overloaded function is really just a set of different functions that happen to have the same name. The determination of which function to use for a particular call is resolved at compile time. In Java, function overloading is also known as compile-time polymorphism and static polymorphism.

Which of the following is an example of function overloading? ›

For example, the sqrt() function can take double , float , int, etc. as parameters. This is possible because the sqrt() function is overloaded in C++.

What is function overloading and operator overloading in C++? ›

C++ allows you to specify more than one definition for a function name or an operator in the same scope, which is called function overloading and operator overloading respectively.

What are the principles of function overloading in C++? ›

Rules of Function Overloading in C++

The functions must have the same name. The functions must have different types of parameters. The functions must have a different set of parameters. The functions must have a different sequence of parameters.

Which operator Cannot overload? ›

Explanation: . (dot) operator cannot be overloaded therefore the program gives error.

What is overloading in programming? ›

Overloading refers to a set of processes in computer programming by which one special word or symbol may be given multiple meanings: Function overloading is a feature found in several programming languages, notably C++ and Java, that allows several functionally different functions or methods to share the same name.

What is function overloading PDF? ›

 Function Overloading means two or more functions have same name, but differ in the number of. arguments or data types of arguments.

Where we can use function overloading? ›

The main advantage of function overloading is that it improves code readability and allows code reusability. The use of function overloading is to save memory space, consistency, and readability. It speeds up the execution of the program. Code maintenance also becomes easy.

What is function overloading and overriding? ›

Function Overloading is when multiple function with same name exist in a class. Function Overriding is when function have same prototype in base class as well as derived class. 2. Function Overloading can occur without inheritance. Function Overriding occurs when one class is inherited from another class.

WHAT IS function and operator overloading? ›

Function overloading means using a single name and giving more functionality to it. Operator overloading means adding extra functionality for a certain operator. When an operator is overloaded, the operator has different meanings, which depend on the type of its operands.

What are the 4 types of functions? ›

The types of functions can be broadly classified into four types. Based on Element: One to one Function, many to one function, onto function, one to one and onto function, into function.

What is function give syntax and example? ›

Syntax of function prototype

In the above example, int addNumbers(int a, int b); is the function prototype which provides the following information to the compiler: name of the function is addNumbers() return type of the function is int. two arguments of type int are passed to the function.

What is method overloading in C? ›

Two or more than two methods having the same name but different parameters is what we call method overloading in C#. Method overloading in C# can be performed by changing the number of arguments and the data type of the arguments.

What is function overloading Mcq? ›

Answer: 3. Function overloading is compile time polymorphism in which 2 or more functions share the same name with different arguments and parameters in C++ oops. Recommended to read function overloading in C++ NOTE: In C++, constructor is also a special type of function that can be overloaded.

What is function overriding in OOP? ›

Function overriding is a concept in object-oriented programming which allows a function within a derived class to override a function in its base class, but with a different signature (and usually with a different implementation).

What is function overloading in C++ Quora? ›

When we make multiple functions in C++ but all function have different number or types of arguments (int,char,float etc) but have the same function name, this is called function overloading.

What is the need for overloading an operator? ›

The need for operator overloading in C++

It allows us to provide an intuitive interface to our class users, plus makes it possible for templates to work equally well with classes and built-in types. Operator overloading allows C++ operators to have user-defined meanings on user-defined types or classes.

What is the difference between function overloading and function overriding in C++? ›

In C++, two or more functions can have the same name if the number or the type of parameters are different. This is function overloading, whereas function overriding is the redefinition of a base class function in its derived class with the same signature.

What is operator overloading give few example? ›

Operator Overloading in Unary Operators

A unary operator is applied on a single operand. For example, ++, - - are some of the unary operators present in C++.

Can we overload member functions? ›

Member function declarations with the same parameters or the same name types cannot be overloaded if any one of them is declared as a static member function.

Why operator overloading is used in C++? ›

It allows you to provide an intuitive interface to users of your class, plus makes it possible for templates to work equally well with classes and built-in/intrinsic types. Operator overloading allows C/C++ operators to have user-defined meanings on user-defined types (classes).

How does function overloading implement polymorphism? ›

You can implement compile-time polymorphism using function overloading and operator overloading. Method/function overloading is an implementation of compile-time polymorphism where the same name can be assigned to more than one method or function, having different arguments or signatures and different return types.

Which operators Cannot be overloaded in C++? ›

Operators that cannot be overloaded in C++

For an example the sizeof operator returns the size of the object or datatype as an operand. This is evaluated by the compiler. It cannot be evaluated during runtime. So we cannot overload it.

Can a constructor be overloaded? ›

Constructors can be overloaded in a similar way as function overloading. Overloaded constructors have the same name (name of the class) but the different number of arguments. Depending upon the number and type of arguments passed, the corresponding constructor is called.

How many operators can be overloaded? ›

The two member access operators, operator->() and operator->*() can be overloaded. The most common use of overloading these operators is with defining expression template classes, which is not a common programming technique.

Can we overload new operator in C++? ›

New and Delete operators can be overloaded globally or they can be overloaded for specific classes. If these operators are overloaded using member function for a class, it means that these operators are overloaded only for that specific class.

What are types of overloading? ›

There are mainly two types of overloading, i.e. function overloading and operator overloading. Function overloading improves the code readability, thus keeping the same name for the same action. Operator overloading allows redefining the existing functionality of operators, thus by giving special meaning to them.

What is overloading explain its types? ›

The process of having two or more functions with the same name, but different parameters, is known as function overloading. The function is redefined by either using different types of arguments or a different number of arguments. It is only through these differences that a compiler can differentiate between functions.

How do you overload a method? ›

In order to overload a method, the parameter list of the methods must differ in either of these:
  1. Number of parameters. For example: This is a valid case of overloading add(int, int) add(int, int, int)
  2. Data type of parameters. For example: add(int, int) add(int, float)
  3. Sequence of Data type of parameters.

Why function overloading is not possible in C? ›

This feature is present in most of the Object Oriented Languages such as C++ and Java. But C doesn't support this feature not because of OOP, but rather because the compiler doesn't support it (except you can use _Generic).

What are the default arguments in C++? ›

A default argument is a value provided in a function declaration that is automatically assigned by the compiler if the calling function doesn't provide a value for the argument. In case any value is passed, the default value is overridden.

Which of the following is correct about function overloading? ›

In functional overloading, both the types and order of arguments is different. Functional overloading is where two or more functions may have different parameters but have the same name. The function can execute multiple operations and thus prevents the use of specific function names for the same operations.

Why we use method overriding? ›

In Java, method overriding occurs when a subclass (child class) has the same method as the parent class. In other words, method overriding occurs when a subclass provides a particular implementation of a method declared by one of its parent classes.

What is the difference between Function Overloading and polymorphism? ›

Polymorphism is the process to define more than one body for functions/methods with same name. Overloading IS a type of polymorphism, where the signature part must be different. Overriding is another, that is used in case of inheritance where signature part is also same.

Is this an example of method overloading or overriding? ›

Method overloading is a example of compile time polymorphism. Whereas method overriding is a example of run time polymorphism.

Which of the following is an example of function overloading? ›

For example, the sqrt() function can take double , float , int, etc. as parameters. This is possible because the sqrt() function is overloaded in C++.

What is function overloading and function overriding in C++? ›

In C++, two or more functions can have the same name if the number or the type of parameters are different. This is function overloading, whereas function overriding is the redefinition of a base class function in its derived class with the same signature.

What is function overloading and operator overloading in C++? ›

C++ allows you to specify more than one definition for a function name or an operator in the same scope, which is called function overloading and operator overloading respectively.

What are the principles of function overloading in C++? ›

Rules of Function Overloading in C++

The functions must have the same name. The functions must have different types of parameters. The functions must have a different set of parameters. The functions must have a different sequence of parameters.

What is function overloading in C++ Quora? ›

When we make multiple functions in C++ but all function have different number or types of arguments (int,char,float etc) but have the same function name, this is called function overloading.

Which operator Cannot be overloaded C++? ›

You cannot overload the following operators: . You cannot overload the preprocessor symbols # and ## . An operator function can be either a nonstatic member function, or a nonmember function with at least one parameter that has class, reference to class, enumeration, or reference to enumeration type.

Which function Cannot be overloaded in C++ program? ›

CPP. 2) Member function declarations with the same name and the name parameter-type-list cannot be overloaded if any of them is a static member function declaration.

What is function overriding give example? ›

Example 1: C++ Function Overriding

So, when we call print() from the Derived object derived1 , the print() from Derived is executed by overriding the function in Base . Working of function overriding in C++ As we can see, the function was overridden because we called the function from an object of the Derived class.

What is difference between Function Overloading & function overriding? ›

Function Overloading is when multiple function with same name exist in a class. Function Overriding is when function have same prototype in base class as well as derived class. 2.

What is difference between Function Overloading and operator overloading? ›

Function overloading means using a single name and giving more functionality to it. Operator overloading means adding extra functionality for a certain operator. When an operator is overloaded, the operator has different meanings, which depend on the type of its operands.

What is overloading in oops? ›

Overloading. Method overloading is a form of polymorphism in OOP. Polymorphism allows objects or methods to act in different ways, according to the means in which they are used. One such manner in which the methods behave according to their argument types and number of arguments is method overloading.

What is an operator function in C++? ›

An operator function is a user-defined function, such as plus() or equal(), that has a corresponding operator symbol. For an operator function to operate on the opaque data type, you must overload the routine for the opaque data type.

Which function overloads the == operator? ›

In Python, overloading is achieved by overriding the method which is specifically for that operator, in the user-defined class. For example, __add__(self, x) is a method reserved for overloading + operator, and __eq__(self, x) is for overloading == .

What is function overloading why it is necessary? ›

Function overloading shows the behavior of polymorphism that allows us to get different behavior, although there will be some link using the same name of the function. Function overloading speeds up the execution of the program. Function overloading is used for code reusability and also to save memory.

Which operator Cannot overload? ›

Explanation: . (dot) operator cannot be overloaded therefore the program gives error.

Can we overload member functions? ›

Operator overloading of member function

When overloading an operator using a member function: The overloaded operator must be added as a member function of the left operand. The left operand becomes the implicit *this object. All other operands become function parameters.

Videos

1. Function overloading in c++ | Ambiguity error in function overloading
(Tarun Sir)
2. CPP program of function overloading, area
(C++ by Saurabh Shukla Sir)
3. C++ overloaded functions (#16) 🍕
(Bro Code)
4. C++ Programming Tutorial 70 - Function Overloading Examples
(Caleb Curry)
5. #10 Function overloading in oop | function overriding in c++ | function overloading in cpp
(Malik Shahzaib Official)
6. Overloading Special [ ] C++ Array Subscript Operator | Cpp Video Tutorial
(LearningLad)
Top Articles
Latest Posts
Article information

Author: Tyson Zemlak

Last Updated: 12/07/2022

Views: 5720

Rating: 4.2 / 5 (63 voted)

Reviews: 94% of readers found this page helpful

Author information

Name: Tyson Zemlak

Birthday: 1992-03-17

Address: Apt. 662 96191 Quigley Dam, Kubview, MA 42013

Phone: +441678032891

Job: Community-Services Orchestrator

Hobby: Coffee roasting, Calligraphy, Metalworking, Fashion, Vehicle restoration, Shopping, Photography

Introduction: My name is Tyson Zemlak, I am a excited, light, sparkling, super, open, fair, magnificent person who loves writing and wants to share my knowledge and understanding with you.