UVA621

水题，判断一下输入数字的格式。输出+ - *？ ，每个符号对应的是一种格式。

AC代码：

#include<stdio.h>#include<iostream>#include<string>using namespace std;int main () {int t;string num;scanf("%d",&t);getchar();while (t--) {getline (cin ,num);int len = num.size();if (num == "1"|| num == "4"||num == "78") {printf("+\n");continue;}if (num[len -1] == '5' && num[len -2]== '3') {printf("-\n");continue;}if (num[len -1] == '4' && num[0] == '9') {printf("*\n");continue;}if (num[0] == '1' && num[1] == '9' && num[2] == '0')printf("?\n");}return 0;}