回文和镜像字符

Hello World

#include<bits/stdc++.h>
/*
判断一个字符串是否是回文串，是否是镜像串
*/
using namespace std;

const char* rev = "A   3  HIL JM O   2TUVWXY51SE Z  8";//空格,为了确定相应位置
const char* msg[] = {" -- is not a palindrome."," -- is a regular palindrome."," -- is a mirrored string."," -- is a mirrored palindrome."};

char r(char ch)
{
    if(isalpha(ch)) return rev[ch - 'A'];
    return rev[ch - '0' + 25];
}
int main()
{

    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);

    char s[30];
    while(scanf("%s", s) == 1) {
        int len = strlen(s);
        int p = 1,m = 1;
        for(int i = 0; i < (len + 1)/2; ++i){ 
            if(s[i] != s[len - 1 - i]) p = 0;
            if(r(s[i]) != s[len - 1 - i]) m = 0;
        }

        printf("%s%s\n\n", s, msg[m * 2 + p]);
    }

    
     

    return 0;
}