Word Score

/*
 * <summary> Compute the score of a word based on its letters </summary>
 * <param = "word"> A string from which to compute the score </param>
 * <return> The total score for the word </return>
 * <precond> "word" should be a null terminated string </precond>
 */
int compute_score(char * word)
{
    int length = strlen(word);
    int i, score = 0;

    for(i = 0; i < length; i++)
    {
        switch(word[i])
        {
            case 'Q' : case 'Z' :
                score += 10;
                break;

            case 'J' : case 'X' :
                score += 8;
                break;

            case 'K' :
                score += 5;
                break;

            case 'F' : case 'H' : case 'V' : case 'W' : case 'Y' :
                score += 4;
                break;

            case 'B' : case 'C' : case 'M' : case 'P' :
                score += 3;
                break;

            case 'D' : case 'G' :
                score += 2;
                break;

            default :
                score += 1;
        }
    }

    return score;
}