#include <iostream>

using namespace std;

const char EXIT_CHAR  {'Q'};

int main() {
    char c;
    int asciiValue;

    while (c != EXIT_CHAR) {
        cin >> c;
        asciiValue = static_cast<int>(c);
        cout << " the letter '" << c << "' has ascii code " 
             << asciiValue << endl;
    }

    cout << endl << endl;

    asciiValue = 48;
    while (asciiValue < 100) {
       cout << asciiValue << " is " << static_cast<char>(asciiValue) << endl;
       ++asciiValue;
    }

    cout << endl << endl;
    c = 'a';
    while (c <= 'z') {
       cout << c ;
       ++c;
    }
    cout << endl;

     // this is bad, it will not work
    //asciiValue = static_cast<int>("hello world");
    
   
    asciiValue = 60;
    while (asciiValue < 87) {
       c = asciiValue;
       cout << c;
       ++asciiValue;
    }
    cout <<endl;

    return 0;
}