int main (void)
{
struct fraction a, b, c, d, r, bad;
a = fractionCreate (5, 6);
b = fractionCreate (8, 9);
c = fractionCreate (56, 160);
d = fractionCreate (35, 150);
bad = fractionCreate (8, 0);
struct fraction e=fractionCreate(31,0);
fractionPrint(e);
r = fractionAdd (a, b);
fractionPrint(r);
r = fractionSubtract (c, d);
fractionPrint(r);
r = fractionMultiply (a, b);
fractionPrint(r);
r = fractionDivide (c, d);
fractionPrint(r);
r = fractionAdd (a, bad);
fractionPrint(r);
r = fractionAdd (b, r);
fractionPrint(r);
e=fractionAdd(b,fractionAdd(a,bad));
fractionPrint(e);
return 0;
}
struct fraction fractionSubtract(struct fraction a, struct fraction b) {
struct fraction init = fractionCreate(0, 0);
if (a.divisor == 0 || b.divisor == 0)
return init;
if (b.whole != 0)
b.whole = -b.whole;
else
b.remainder = -b.remainder;
return fractionAdd(a, b);
}