#includeint main() { int m = 0; int n = 0; scanf("%d %d", &m, &n);//输入除数与被除数 int ret = 0; while(ret = m % n)//注意是=,不是==;语句为0时结束循环 { m = n; n = ret; } printf("%dn", n); return 0; }

#includeint main() { int m = 0; int n = 0; scanf("%d %d", &m, &n);//输入除数与被除数 int ret = 0; while(ret = m % n)//注意是=,不是==;语句为0时结束循环 { m = n; n = ret; } printf("%dn", n); return 0; }