扩展欧几里德算法

算法导论

代码：

#include <stdio.h>
void extened_euclid(int a, int b, int* d, int* x, int* y)
{
	int dp, xp, yp;
	if (b == 0)
	{
		*d = a;
		*x = 1;
		*y = 0;
	}
	else
	{
		extened_euclid(b, a%b, &dp, &xp, &yp);
		*d = dp;
		*x = yp;
		*y = xp- a/b*yp;
	}
}
int main()
{
	int d = 0, x = 0, y = 0;
	extened_euclid(99, 78, &d, &x, &y);
	printf("%d %d %d
", d, x, y);
	getchar();
	return 0;
}