UvaOj 401 - Palindromes

#include<cstdio>
#include<cstring>

#define MAXM 1000
char fc[MAXM];
void init()
{
memset(fc, 0, sizeof(fc));
fc['A'] = 'A';
fc['E'] = '3';
fc['H'] = 'H';
fc['I'] = 'I';
fc['J'] = 'L';
fc['L'] = 'J';
fc['M'] = 'M';
fc['O'] = 'O';
fc['S'] = '2';
fc['T'] = 'T';
fc['U'] = 'U';
fc['V'] = 'V';
fc['W'] = 'W';
fc['X'] = 'X';
fc['Y'] = 'Y';
fc['Z'] = '5';
fc['1'] = '1';
fc['2'] = 'S';
fc['3'] = 'E';
fc['5'] = 'Z';
fc['8'] = '8';
}
#define MAXN 22
char s[MAXN];
int n;
int ispa(char s[])
{
for(int i=0; i<n/2; i++)
{
if(s[i] != s[n-1-i]) return 0;
}
return 1;
}

int ismi(char s[])
{
for(int i=0; i<n/2; i++)
{
if(!fc[s[n-1-i]] || s[i] != fc[s[n-1-i]]) return 0;
}
if(n%2)
{
if(!fc[s[n/2]] || s[n/2] != fc[s[n/2]]) return 0;
}
return 1;
}

int main()
{
init();
while(scanf("%s", s)!=EOF)
{
n = strlen(s);
int isp = ispa(s);
int ism = ismi(s);
if(isp && ism)
{
printf("%s -- is a mirrored palindrome.\n", s);
}
else if(isp)
{
printf("%s -- is a regular palindrome.\n", s);
}
else if(ism)
{
printf("%s -- is a mirrored string.\n", s);
}
else
{
printf("%s -- is not a palindrome.\n", s);
}
printf("\n");
}
}