#include<stdio.h> int main() { int a = 0; int b = 0; int c = 0; while (1) { printf("输入三个数:"); scanf_s("%d", &a); scanf_s("%d", &b); scanf_s("%d", &c); if ((a > 0 && a < 100000) || (b>0 && b < 100000) || (c>0 && c < 100000)) { break; } } if (a>b) { b = a; } if (b>c) { c = b; } printf("最大值为::%d\n",c); }