// Program to illustrate friend function example
#include<iostream.h>
class sample
{
private:
int sub1;
int sub2;
int sub3;
public:
friend int totalmarks(sample temp);
void getmarks();
};
void sample::getmarks()
{
cout<<"\n Enter three marks";
cin>>sub1>>sub2>>sub3;
}
int totalmarks(sample temp)
{
int total;
total=temp.sub1+temp.sub2+temp.sub3;
return total;
}
int main()
{
sample obj;
obj.getmarks();
cout<<"\n Total marks :"<<totalmarks(obj);
return 0;
}
Test data
Enter three marks
30 35 40
Output
Total marks : 105
