题解 判断字符

#include <bits/stdc++.h>
using namespace std;
int main(){
    char n;
    cin>>n;
    if('a'<=n&&n<='z')cout<<"a";
    else if('A'<=n&&n<='Z')cout<<"A";
 	else if('0'<=n&&n<='9')cout<<"0";
    else cout<<"other";
    return 0;
}