解译密码

//将密码译回原文，方式为把第i个字母变成第（26-i+1）个字母，非字母不变

#include<stdio.h>int main(){int i;int j;char ch[80];char tran[80];printf("input cipher code:");gets(ch);printf("\ncipher code:%s",ch);i=0;while(ch[i]!='\0'){if((ch[i]>='A')&&(ch[i]<='Z')){tran[i]=155-ch[i];}else if((ch[i]>='a')&&(ch[i]<='z')){tran[i]=219-ch[i];}else{tran[i]=ch[i];}i++;}j=i;printf("\nnoriginal text:");for(i=0;i<j;i++){putchar(tran[i]);}printf("\n");return 0;}