Friend Function is not showing any output..

[subhransu]

Friend Function is not showing any output. Friend function is not printing anything !!

#include<iostream>
using namespace std;

class add 
 { 

private:
int a;
int b;

private:

void set_ab(int i ,int j);
friend void sum();
 };

void add::set_ab(int i,int j)
{
a=i;
b=j;
}

void sum()
{
add x;
x.set_ab(10,20);
cout << "Sum= " << x.a+x.b;
}


int main()
{
sum();
return 0;
}

[Need4Sleep]

I don't see why your code is not giving you your desired output. What does your ouput show? I ran your program on my laptop:

gmercer@ubuntu:~/Documents/testFolder$ clang++ -Wall -g add.cpp
gmercer@ubuntu:~/Documents/testFolder$ ls
add.cpp  a.out
gmercer@ubuntu:~/Documents/testFolder$ ./a.out
Sum= 30

[gomson]

Same here..it works fine of Visual studio 2013...