401 Palindromes（回文串与镜像串）

#include<cstdio>

#include<cstring>
#include<ctype.h>
const char rev[] = "A   3  HIL JM O   2TUVWXY51SE Z  8 ";
const char* msg[] = {"not a palindrome","a regular palindrome","a mirrored string","a mirrored palindrome"};

char mir(char c)
{
if(isalpha(c))
{
return rev[c - 'A'];
}
else
{
return rev[c - '0' + 25];
}
}

int main()
{
char s[30];
while(~scanf("%s",s))
{
int len = strlen(s);
int p = 1,m = 1;
for(int i = 0;i < (len+1)/2;i++)
{
if(s[i] != s[len-i-1])
{
p = 0;
}
if(mir(s[i]) != s[len-i-1])
{
m = 0;
}
}
printf("%s -- is %s.\n\n",s,msg[m*2 + p]);
}
}