PHP: How to output list like this: AA, AB, AC, all the way to ZZZY, ZZZZ, ZZZZA etc

Question

I\'m trying to write a function that\'ll convert an integer to a string like this, but I can\'t figure out the logic... :(

1 = a
5 = e
27 = aa
28 = ab
etc...         


        

Answer 1

void convert(int number)
{

        string str = "";

    while(number)
    {
        char ch;
        ch = (number - 1) % 26 + 65;    
        str = ch + str;
        number = (number-1) / 26;
    }

    cout << str << endl;
}