杭电acm 1266逆序输出

#include <cstdio>  #include <cstring>  int main()  {      int t;      char s[117];      scanf("%d",&t);      while(t--)      {          scanf("%s",s);          int k = 0;          int len = strlen(s);          if(s[0] == '-')              printf("-");          int flag = 0;          for(int i = len-1; i >= 0; i--)          {              if(s[i]=='0'&&flag==0)                  k++;              else if(s[i]=='-')                  continue;              else              {                  flag = 1;                  printf("%c",s[i]);              }          }          for(int i = 0; i < k; i++)              printf("0");          printf("\n");      }      return 0;  }