整型÷整型=整型，比如 5 / 10 = 0 。实型÷整型=实型，比如 5.0 / 10 = 0.5 。所以应写成 x * 1.0 / y * 100 。include <stdio.h> int main(){ int x,y;puts("请输入两个整数。");printf("整数x：");scanf("%d",&x);printf("整数y：");scanf("%d",&y);printf("...