zoj 3439 Substitution Cipher

#include <iostream>#include <cstdio>using namespace std;char tb1[] = "ikljeuvnydzabsfcwgpthxormq";char tb2[] = "IKLJEUVNYDZABSFCWGPTHXORMQ";int main(){char ch;while(~scanf("%c", &ch)){if(isupper(ch)){printf("%c", tb2[ch - 'A']);}else if(islower(ch)){printf("%c", tb1[ch - 'a']);}else{printf("%c", ch);}}}