online_judge_1055

#include <stdio.h>#include <stdlib.h>#include <string.h>int main(){    char str[201],ch;    int len,i;    while(gets(str)!=NULL)    {        len=strlen(str);        for(i=0;i<len/2;i++)        {            ch=str[i];            str[i]=str[len-1-i];            str[len-1-i]=ch;        }        puts(str);    }    return 0;}