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;
}