How to use relational operator overloading?

CODE

How to use relational operator overloading?

//Write a program to enter heights of 2 persons and display the output using relational operator overloading…

#include<iostream>

using namespace std;

class height

{

    int f,i;

public:

    void input()

    {

        cout<<"\n feet and inches:";

        cin>>f>>i;

    }

    int operator == (height r)

    {

        if(f==r.f && i==r.i)

            return(1);

        else

            return 0;

    }

    int operator < (height r)

    {

        if((f*12+i)<(r.f*12+r.i))

            return 1;

        else

            return 0;

    }

};

int main()

{

    height h1,h2;

    cout<<"\n enter the height of h1:";

    h1.input();

    cout<<"\n enter the height of h2:";

    h2.input();

    if(h1==h2)

        cout<<"same";

    else

        cout<<"\n not same";

    if(h1<h2)

        cout<<"\n h1 is shorter than h2";

    else

        cout<<"\n h1 is not shorter than h2";

}

Output:

enter the height of h1:

 feet and inches:32

68

 enter the height of h2:

 feet and inches:12

53

 not same

 h1 is not shorter than h2