src/card.c


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#include "card.h"
#include <assert.h>

/**
 * Calculate the score of a single card
 * Cards divisible by  5:            2 points
 * Cards divisible by 10:            3 points
 * Cards divisible by 11:            5 points
 * Card 55 (divisible by 5 and 11):  7 points
 * @return Score of the card
 */
uint32_t card_get_points(const card c)
{
	assert(c > 0 && c <= 105);

	if (55 == c) return 7; // Card 55 is worth of 7 points
	if (c % 11 == 0) return 5; // Cards that are multiples of 11 are worth 5 points
	if (c % 10 == 0) return 3; //          ...                10 are worth 3 points
	if (c % 5 == 0) return 2; //           ...                 5 are worth 2 points
	return 1; // All other cards are worth 1 point
}