题解 | 凯撒解密

#include <string.h>
char* decodeWangzai(char* password, int n ) 
{
    int a=strlen(password);
    for(int i=0;i<a;i++)
    {
        if(password[i]-n%26>='a')
        password[i]=password[i]-n%26;
        else
        password[i]=password[i]+'z'+1-n%26-'a';
    }
    return password;
}