Functions in C++ || Code with abuzar

 

                       Functions in C++ 

    In this tutorial you will learn about functions and examples 

A function is a group of statements that perform a task . Every program tha has a function , which is main(). and all the program can define additinal functions.

You can divide up your code into seprate functions . but logically is such that each function perform specific task .

C++ User defined functions 

C++ allows the programmer to define their own function .A user define function perform a specific task and that group of code is given a number(Identifier).

When the function is involked from any parts of the program , it all executed the codes defined in the body of the function .

Syntax to decalre the function 

Return type functionName ( parameter1 , parameter2 ....){

// Function body

}

This is the example of function declaration 

Example :

#include<iostream>

using namesapce std;

int sum( int a , int b ){

int c = a*b;

return c;

}

int main(){

Int  num1 , num2 ;

cout<<"Enter the first number "<<endl;

cin>>num1;

cout<<"Enter the second number "<<endl;

cin>>num2 ;

cout<<"Your answer is \n"<<sum(num1 ,num2);

return 0;

}

Output  :

Enter your first number number  2

Enter your second number 5

Your answer is 10

C++ User defined functions 

Functions is used when we do different task on same platform so we use functions in c++ the role of function is very important . Suppose you make a application where you can do many types of work like editing , green effect and much more . so in this case you have to used functions .

Benefit of using user define-function

• function make the code reusable . We can declare them once and use them multiple times

• Function make the program easier and each small task is divided into a functions .

• Function increase readability.

       RELATED ARTICLE 

1. Class and object in C++         
2. Data abstraction in C++
3. Protected member function
4. Encapsulation in C++

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