答案：

#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main()
{int n = 0;int count1 = 0, count2 = 0, count3 = 0;scanf("%d", &n);while (n--){char ch[100];scanf("%s", ch);int len = strlen(ch);if (len >= 8)        //满足长度条件的话，判断下一个条件{if (!isdigit(ch[0]))     //满足首元素条件的话，判断下一个条件{for (int i = 0; i < len; i++)    //从第一个元素到最后一个元素{if (isalpha(ch[i]) || isdigit(ch[i]))    //满足类型范围的话，判断有几种类型{if (ch[i] >= 'A' && ch[i] <= 'Z')       //如果有大写字母类型{count1 = 1;     //大写计数器从0变为1}else if (ch[i] >= 'a' && ch[i] <= 'z')   //如果有小写字母类型{count2 = 1;        //小写计数器从0变为1}else       //如果是数字类型{count3 = 1;     //数字计数器从0变为1}}else     //不满足类型范围{printf("NO\n");}if (i == len - 1)    //如果所有字符都已经判断完{if ((count1 + count2 + count3) >= 2)    //如果满足类型种类要求{printf("YES\n");    //所有条件都满足了}else      //不满足类型种类要求{printf("NO\n");}}}}else    //不满足首元素条件{printf("NO\n");}}else   //不满足长度条件{printf("NO\n");}}return 0;
}