Friend function Demo : Friend « Class « C++

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C++ » Class » Friend Screenshots  Friend function Demo    #include <iostream> using namespace std; class myclass {   int num; public:   myclass(int x) {       num = x;    }   friend int isneg(myclass ob); }; int isneg(myclass ob) {   return (ob.num < 0) ? 1 : 0; } int main() {   myclass a(-1), b(2);   cout << isneg(a) << ' ' << isneg(b);   cout << endl;   return 0; }                               Related examples in the same category 1. Make the inserter into a friend function 2. Define friend function for << 3. friend class for each other 4. Friends can access private members of a class. 5. Use friend function to access the non-public member variable