A small C++ program that generates pythagorean triplets, taking two integers as inputs. Compiled with GCC G++ 4.6.2.

pythagoras.cpp

#include <cstdlib>
#include <iostream>
using namespace std;

int triplet(int m, int n)
{
  int a = (m * m) - (n * n);
	int b = 2 * m * n;
	int c = (m * m) + (n * n);
	int triplet[3] = {a,b,c};
	
	cout<<"A = ("<<triplet[0]<<","<<triplet[1]<<","<<triplet[2]<<")."<<endl;
	
	return 0;
}

int main(int argc, char** argv)
{
	if(argc == 3)
	{
		int m = atoi(argv[1]);
		int n = atoi(argv[2]);
		if(m > n)
		{
			triplet(m, n);
		}
		else
		{
			cerr<<"m <= n"<<endl;
		}
	}
	else
	{
		cerr<<"Usage: pythagoras [m] [n]"<<endl<<endl<<"Creates a pythagorean triplet using Euclid's forumlae, such that m must be greater than n."<<endl;
	}

	return 0;
}