friend class

1. Create a friend class BestFriend to the class frac. Inside the class BestFriend, and implement a function outputfrac() to print the content of the frac instance.
2. Create a friend function outputfrac() to print the content of the frac instance for class GoodFriend to the class frac.

Starter: lab8_ex1_friend.cpp

#include <iostream>
#include <cstdlib> // labs()

using namespace std;

class frac; // Forward Declaration <--- necessary for using frac before it is defined

// Function Prototypes for Overloaded Stream Operators
ostream &operator << (ostream &, const frac &);
istream &operator >> (istream &, frac &);

// Define the GoodFriend class which has a Friend outputfrac() 
class GoodFriend
{
// ---> define the GoodFriend class


};

class frac {
//private:
long num;
long den;

public:
// constructors
frac() {
num = 0;
den = 1;
}

frac(long n, long d) {
num = n;
den = d;
}

frac(const frac &f) {
num = f.num;
den = f.den;
}

// accessors and mutators
long getNum() {return num;}
long getDen() {return den;}
void setNum(long n) {num = n;}
void setDen(long d) {den = d;}

// auxiliary method
void outputfrac() {std::cout << ' ' << num << '/' << den << ' ';}

// Friends - overload stream operators

friend ostream &operator << (ostream &strm, const frac &f)
{
strm << f.num << '/' << f.den;
return strm;
}

// Friend class ---> BestFriend prototype here

// Friend function ---> GoodFriend::outputfrac() prototype here


};

//--------------------------------------------------------------
// Friend class to frac - method definition here
class BestFriend
{
// ---> define the best friend class with outputfrac() here



};

void GoodFriend::outputfrac(frac &f) {
// ----> define this friend's outputfrac() here



}

int main()
{
// testing friendship
frac f(3,8);

BestFriend bf;
bf.outputfrac(f);

GoodFriend gf;
gf.outputfrac(f);

cout << f ;

return 0;
}