What is wrong with this program?

A Pythagorean triplet is a set of three natural numbers, a < b < c, for which,

a^2 + b^2 = c^2

For example, 32 + 42 = 9 + 16 = 25 = 52.

There exists exactly one Pythagorean triplet for which a + b + c = 1000.

Find the product abc.

So i do this and here is my program to find a,b and c.

Code:#include <stdio.h> main() { int a,b,c; for (a=0;a<=1000;a++) { for (b=0;b<=1000;b++) { for (c=0;c<=1000;c++) { if (a+b==c&&((a*a)+(b*b)==(c*c))&&(a<b<c)) printf("%d,%d,%d",a,b,c); } } } getch(); }