HOJ 2066 Word Reversal

http://acm.hit.edu.cn/hoj/problem/view?id=2066

字符串反序

#include <stdio.h>#include <string.h>int main(){    int t, i, len;    char str[128];    char temp;        scanf("%d", &t);    getchar();    while (t--)    {        gets(str);        len = strlen(str);        for(i = 0; i <= (len-1) / 2; i++)        {            temp = str[i];            str[i] = str[len-i-1];            str[len-i-1] = temp;        }        puts(str);    }    return 0;}