字符串题解

#include<iostream>
using namespace std;

int main()
{
char ch;
cin >> ch;
if(ch >= 'A' && ch <= 'Z')
{
cout << "A";
}

 else if(ch >= 'a' && ch <= 'z')
{    
    cout << "a";
} 

 else if(ch >= '0' && ch <= '9')
{
    cout << "0";
}   
else
{
    cout << "other";
}    
return 0;

}