well .h is deprecated but none the less still there.

Thank you guys. You gave me a big hint. I finally got it to work.
see you guys next time. it is a wonderfully you are doing.
thank you again.

the third program is one that adds and subtracts two fractions, not necessarily positive, and displays the exact sum or difference in the lowest terms.
Use the c++ construct "struct" to create a data type for the fractions.
This how I do this;

#include <iostream>

using namespace std;

struct frac{int numer, denom;};

frac f_add( frac, frac );

int main( ){

frac r, s, sum;

cout << "Enter the numerator and the denominator of the first fraction separated by a space=> " << endl;

cin >> r.numer >> r.denom;

while (r.numer,r.denom < 0)

{

cout <<"Yes you may enter a negative integer" <<endl;

}

cout << "Enter the numerator and the denominator of the second fraction separate by a space=> " << endl;

cin >> s.numer >> s.denom;

while (s.numer, s.denom < 0)

{

cout <<"Yes you also enter a negative integer" <<endl;

}

cout <<"You have entered "<< r.numer <<" / "<< r.denom << " and " << s.numer<<"/" <<s.denom<<"\n"<<endl;



int gcd = find gcd (r.denom, s.denom);

sum = f_add(r,s);

cout << "The sum of " << r.numer <<"/" << r.denom << " and "<< s.numer <<"/" << s.denom <<" in lowest term is " << sum.numer <<"/" << sum.denom <<".\n";

return 0;

}

frac f_add(frac r, frac s){

if (r=s)

return r;

else if (a=0)

return s;

else if (s=0)

return r;

else if (r>b);

return find gcd (s, r/s);

else

return findgcd (r, s/r);

}



}



I feel like i am doing something wrong but i cannot figure it out! Please help!
I am very confused with the construct "struct":
what do think i need and how to apply it and where?
thank you