Microsoft MOD7 11-Digit CD Key Generator

[FONT=monospace][COLOR=#BC7A00]#include[/COLOR] [COLOR=#408080][I]<stdio.h>[/I][/COLOR][COLOR=#BC7A00]
#include[/COLOR] [COLOR=#408080][I]<time.h>[/I][/COLOR][COLOR=#BC7A00]
#include[/COLOR] [COLOR=#408080][I]<stdlib.h>[/I][/COLOR][COLOR=#BC7A00]
#include[/COLOR] [COLOR=#408080][I]<math.h>[/I][/COLOR][COLOR=#BC7A00]
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[COLOR=#B00040]int[/COLOR] 
[COLOR=#0000FF]getdigit[/COLOR]([COLOR=#B00040]int[/COLOR] num, [COLOR=#B00040]int[/COLOR] n)
{
    [COLOR=#B00040]int[/COLOR] r;

    r [COLOR=#666666]=[/COLOR] num [COLOR=#666666]/[/COLOR] pow([COLOR=#666666]10[/COLOR], n);

    r [COLOR=#666666]=[/COLOR] r [COLOR=#666666]%[/COLOR] [COLOR=#666666]10[/COLOR];

    [COLOR=#008000][B]return[/B][/COLOR] r;
}

[COLOR=#B00040]int[/COLOR]
[COLOR=#0000FF]sum_of_digits[/COLOR] ([COLOR=#B00040]int[/COLOR] number)
{
    [COLOR=#B00040]int[/COLOR] temp [COLOR=#666666]=[/COLOR] number;
    [COLOR=#B00040]int[/COLOR] sum [COLOR=#666666]=[/COLOR] [COLOR=#666666]0[/COLOR];
    [COLOR=#008000][B]while[/B][/COLOR] (temp)
      {
        sum [COLOR=#666666]+=[/COLOR] temp [COLOR=#666666]%[/COLOR] [COLOR=#666666]10[/COLOR];
        temp [COLOR=#666666]/=[/COLOR] [COLOR=#666666]10[/COLOR];
      }

    [COLOR=#008000][B]return[/B][/COLOR] sum;
}

[COLOR=#B00040]int[/COLOR]
[COLOR=#0000FF]first_segment[/COLOR] ()
{
    [COLOR=#B00040]int[/COLOR] min [COLOR=#666666]=[/COLOR] [COLOR=#666666]1[/COLOR];
    [COLOR=#B00040]int[/COLOR] max [COLOR=#666666]=[/COLOR] [COLOR=#666666]999[/COLOR];
    [COLOR=#B00040]int[/COLOR] xxx [COLOR=#666666]=[/COLOR] min [COLOR=#666666]+[/COLOR] rand() [COLOR=#666666]%[/COLOR] (max[COLOR=#666666]-[/COLOR]min);
    [COLOR=#B00040]int[/COLOR] last;
    
    last [COLOR=#666666]=[/COLOR] getdigit(xxx, [COLOR=#666666]0[/COLOR]) [COLOR=#666666]+[/COLOR] [COLOR=#666666]1[/COLOR];
    
    [COLOR=#008000][B]return[/B][/COLOR] xxx [COLOR=#666666]*[/COLOR] [COLOR=#666666]10[/COLOR] [COLOR=#666666]+[/COLOR] last;
}

[COLOR=#B00040]int[/COLOR]
[COLOR=#0000FF]second_segment[/COLOR] ()
{
    [COLOR=#B00040]int[/COLOR] xxxxxx;
    [COLOR=#B00040]int[/COLOR] sum;
    [COLOR=#B00040]int[/COLOR] last;

    [COLOR=#008000][B]do[/B][/COLOR] 
      {
        xxxxxx [COLOR=#666666]=[/COLOR] rand() [COLOR=#666666]%[/COLOR] [COLOR=#666666]1000000[/COLOR];
        sum [COLOR=#666666]=[/COLOR] sum_of_digits(xxxxxx);
        last [COLOR=#666666]=[/COLOR] [COLOR=#666666]7[/COLOR][COLOR=#666666]-[/COLOR](sum[COLOR=#666666]%[/COLOR][COLOR=#666666]7[/COLOR]);
      }
    [COLOR=#008000][B]while[/B][/COLOR](last [COLOR=#666666]==[/COLOR] [COLOR=#666666]0[/COLOR] [COLOR=#666666]|| [/COLOR]last [COLOR=#666666]==[/COLOR] [COLOR=#666666]8[/COLOR]);

    [COLOR=#008000][B]return[/B][/COLOR] xxxxxx [COLOR=#666666]*[/COLOR] [COLOR=#666666]10[/COLOR] [COLOR=#666666]+[/COLOR] last;
}

[COLOR=#B00040]int[/COLOR]
[COLOR=#0000FF]main[/COLOR] ([COLOR=#B00040]int[/COLOR] argc, [COLOR=#B00040]char[/COLOR] [COLOR=#666666]*[/COLOR]argv[])
{
    srand (time ([COLOR=#008000]NULL[/COLOR]));
    [COLOR=#B00040]int[/COLOR] firstse [COLOR=#666666]=[/COLOR] first_segment (), secondse [COLOR=#666666]=[/COLOR] second_segment ();

    printf ([COLOR=#BA2121]"[+] 11 Digit CD Serial Key > %04d-%07d[/COLOR][COLOR=#BB6622][B]\n[/B][/COLOR][COLOR=#BA2121]"[/COLOR], firstse, secondse);
    

    [COLOR=#008000][B]return[/B][/COLOR] EXIT_SUCCESS;
}
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