C++ : Function call by value

Today i am going to share a simple function program with you i hope you will like this .

#include<iostream>

using namespace std;

int add(int , int );

int main()

{

int a , b , c;

cout<<"Enter values \n";

cin>>a>>b;

c = add(a , b);

cout<<"sum : "<<c;

c = add(a , b);

cout<<"add ="<<c;

}

int add(int x , int y)

{

int sum = x + y;

return sum;

}

Output : 

Enter values 

3 

5

sum : 3 + 5 = 8