C语言翻转字符串

static void reverseStr(char *s, unsigned int len) {

    int low = 0;

    int high = len - 1;

    for (unsigned int idx = 0; idx < len / 2; ++idx) {

        s[idx] = s[idx] ^ s[len - idx - 1];

        s[len - idx - 1] = s[idx] ^ s[len - idx - 1];

        s[idx] = s[idx] ^ s[len - idx - 1];

    }

    return;

}