UVA - 621 Secret Research

题目大意： 求给出的数字是哪一种编码

解题思路：用数组存储，然后在进行比较

#include<cstdio>#include<cstring>int main() {char str[10000];int test;scanf("%d\n", &test);for(int i = 0; i < test; i++) {gets(str);int len = strlen(str);if(strcmp(str,"1") == 0 || strcmp(str,"4") == 0 || strcmp(str,"78") == 0 ) {printf("+\n");continue;}if(len >=2  && str[len - 1] == '5' && str[len - 2] == '3') {printf("-\n");continue;}if(len >= 2 && str[0] == '9' && str[len -1] == '4') {printf("*\n");continue;}if(len >= 3 && str[0] == '1' && str[1] == '9' && str[2] == '0') printf("?\n");memset(str,'\0',sizeof(str));}return 0;}