题解 | #判断是不是字母#

#include<bits/stdc++.h>
using namespace std;
int main()
{
    char a;
    while(cin>>a)
    {
        if(a>='A'&&a<='Z'||a>='a'&&a<='z')
            cout<<a<<" is an alphabet."<<endl;
        else
            cout<<a<<" is not an alphabet."<<endl;
    }
    return 0;
}