So Im pretty stuck,Ill put the question down below and the code I have. It asks you to complete the self test 17, which I think I did, but for some reason i can get it to work. Anyways, any help would be great:

self-test exercise 17 asked you to overload the operator >> and the operator << for a class pairs. Complete and test this exercise. Implement the default constructor and the constructors with one and two int parameters. The one parameter constructor should initialize the first member of the pair; the second member of the pair is to be 0.
Overload binary operator to add pairs according to the rule
(a, b) (c, d) = (a c, b d)
Overload operator- analogously.
Overload operator* on pairs and int according to the rule
(a, b)*c= (a*c, b*c)
Write a program to test all the member functions and overloaded operators in your class definition.

And this is the code I have for self test 17 which I cant get to work:

#include <iostream>

using namespace std;

class Pairs

{

public:

Pairs () ;

Pairs(int first, int second);

friend istream& operator >>(istream& ins, Pairs& second);

friend ostream& operator <<(ostream& outs, const Pairs& second);

private:

int f;

int s;

};

istream& operator >>(istream& ins, Pairs& second)

{

char ch;

ins >> ch;

ins >> second.f;

ins >> ch;

ins >> second.s;

ins >> ch;

return ins;

}

ostream& operator <<(ostream& outs, const Pairs& second)

{

outs << '(';

outs << second.f;

outs << ',';

outs << second.s;

outs << ')';

return outs;

}