#include <iostream>
int main( )
{
    std::cout << "type a character: ";
    char ch;
    std::cin >> ch;
    // isalpha
    // isdigit
    // ispunct
    // isspace
    // isupper
    // islower
    if ( isalpha( ch ) )
    {
        std::cout << "alpha ";
    }
    else if ( isdigit( ch ) )
    {
        std::cout << "digit ";
    }
    else if ( ispunct( ch ) )
    {
        std::cout << "punctuation ";
    }
    else {
        std::cout << "neither of the above ";
    }
    return 0;
}