class className{
// Other Declarations
friend returnType functionName(arg list);
};
class ClassB;
class ClassA {
// ClassB is a friend class of ClassA
friend class ClassB;
... .. ...
}
class ClassB {
... .. ...
}// Program to illustrate friend function
#include<iostream>
using namespace std;
class integer
{
int a, b;
public:
void set_value()
{
a=50;
b=30;
}
friend int mean(integer s); //declaration of friend function
};
int mean(integer s)
{
return int(s.a+s.b)/2.0; //friend function definition
}
int main()
{
integer c;
c.set_value();
cout<< "Mean value:" <<mean(c);
return 0;
}class ClassB;
class ClassA {
// ClassB is a friend class of ClassA
friend class ClassB;
... .. ...
}
class ClassB {
... .. ...
}class ClassB;
class ClassA {
// ClassB is a friend class of ClassA
friend class ClassB;
... .. ...
}
class ClassB {
... .. ...
}class ClassB;
class ClassA {
// ClassB is a friend class of ClassA
friend class ClassB;
... .. ...
}
class ClassB {
... .. ...
}class ClassB;
class ClassA {
// ClassB is a friend class of ClassA
friend class ClassB;
... .. ...
}
class ClassB {
... .. ...
}class ClassB;
class ClassA {
// ClassB is a friend class of ClassA
friend class ClassB;
... .. ...
}
class ClassB {
... .. ...
}class ClassB;
class ClassA {
// ClassB is a friend class of ClassA
friend class ClassB;
... .. ...
}
class ClassB {
... .. ...
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