c语言 翻译密码

代码如下：

#include<stdio.h>#include<string.h>int main(){    int i=0;    char s1[100],s2[100];    scanf("%s",s1);    while(s1[i]!='\0')    {        s2[i]=s1[i];        if(s1[i]>='A'&&s1[i]<='Z')            s2[i]=155-s1[i];        else            if(s1[i]>='a'&&s1[i]<='z')            s2[i]=219-s1[i];            i++;        }    printf("%s,%s",s1,s2);}