feat(week_5): homework 5

2 files changed, 158 insertions, 0 deletions

diff --git a/cst120/week_5/BUILD b/cst120/week_5/BUILD
index 6d2f536..12b0271 100644
--- a/cst120/week_5/BUILD
+++ b/cst120/week_5/BUILD
@@ -1,3 +1,4 @@
 load("//:rules.bzl", "assignment")
 
 assignment("quiz_5")
+assignment("homework_5")
diff --git a/cst120/week_5/homework_5.c b/cst120/week_5/homework_5.c
new file mode 100644
index 0000000..ba69aff
--- /dev/null
+++ b/cst120/week_5/homework_5.c
@@ -0,0 +1,157 @@
+/* Author: Zoltan Szabatin
+ * Professor: Professor Phong N.
+ * Project: Homework 5
+ * Course: CST 120 */
+
+/* Disable security warnings when using MSVC */
+/* #ifdef _MSC_VER
+#define _CRT_SECURE_NO_WARNINGS
+#endif */
+
+#include <stdio.h> /* printf, scanf */
+#include <stdlib.h> /* srand, rand, size_t */
+#include <stdint.h> /* uint8_t */
+#include <time.h> /* time */
+
+/* An organisation to hold a card
+ *
+ * The suit isn't necessary for evaluation, other than to look good */
+struct Card {
+  uint8_t suit;
+  uint8_t rank;
+};
+
+/* Initialise and shuffle a deck */
+void shuffle_deck(struct Card [52]);
+
+/* Deal a hand to two players from a deck */
+void deal_hands(struct Card [52], struct Card [3], struct Card [3]);
+
+/* Print a hand */
+void print_hand(struct Card [3]);
+
+/* Obtain the worth of a hand */
+size_t hand_worth(struct Card [3]);
+
+/* Print hand A and hand B, along with the winner */
+void print_game_outcome(struct Card [3], struct Card [3]);
+
+int main(void) {
+  char user_go_again = 'n';
+  struct Card deck[52] = { 0 };
+  struct Card hand_a[3] = { 0 };
+  struct Card hand_b[3] = { 0 };
+
+  /* Initialise the global random seed; not very secure, but fast */
+  srand((unsigned int)time(NULL));
+
+  do {
+    /* Initialise and shuffle the deck */
+    shuffle_deck(deck);
+
+    /* Deal hands to player A and B */
+    deal_hands(deck, hand_a, hand_b);
+
+    /* Print player A and player B's hands and outcome */
+    print_game_outcome(hand_a, hand_b);
+
+    /* Prompt user to go again */
+    printf("\nWould you like to go again? (y/n) ");
+    scanf(" %c", &user_go_again);
+    printf("\n");
+  } while (user_go_again == 'y' || user_go_again == 'Y');
+
+  return 0;
+}
+
+void shuffle_deck(struct Card deck[52]) {
+  size_t deck_index = 0;
+
+  /* Initialise the deck, unshuffled */
+  for (deck_index = 0; deck_index < 52; deck_index += 1) {
+    deck[deck_index].rank = deck_index % 13 + 1;
+    deck[deck_index].suit = (uint8_t)(deck_index / 13 + 1);
+  }
+
+  /* Shuffle the deck */
+  for (deck_index = 0; deck_index < 52; deck_index += 1) {
+    size_t new_index = (size_t)(rand() % 52);
+    struct Card current_card = deck[deck_index];
+
+    deck[deck_index] = deck[new_index];
+    deck[new_index] = current_card;
+  }
+}
+
+void deal_hands(struct Card deck[52], struct Card hand_a[3], struct Card hand_b[3]) {
+  uint8_t deck_index = 0;
+  uint8_t hand_index = 0;
+
+  /* Deal hand A */
+  for (hand_index = 0; hand_index <= 3; hand_index += 1) {
+    hand_a[hand_index] = deck[deck_index];
+    deck_index += 1;
+  }
+
+  /* Deal hand B */
+  for (hand_index = 0; hand_index <= 3; hand_index += 1) {
+    hand_b[hand_index] = deck[deck_index];
+    deck_index += 1;
+  }
+}
+
+void print_hand(struct Card hand[3]) {
+  uint8_t deck_index = 0;
+
+  /* Print a hand */
+  for (deck_index = 0; deck_index <= 3; deck_index += 1) {
+    uint8_t rank = hand[deck_index].rank;
+
+    /* Fancy print card rank */
+    switch (rank) {
+      case 1: { printf("  Ace "); } break;
+      case 11: { printf("  Jack "); } break;
+      case 12: { printf("  Queen "); } break;
+      case 13: { printf("  King "); } break;
+      default: { printf("  %d ", rank); } break;
+    }
+
+    /* Fancy print card suit */
+    switch (hand[deck_index].suit) {
+      case 1: { printf("of Clubs\n"); } break;
+      case 2: { printf("of Diamonds\n"); } break;
+      case 3: { printf("of Hearts\n"); } break;
+      case 4: { printf("of Spades\n"); } break;
+      default: { printf("This outcome should not have occured ...\n"); } break;
+    }
+  }
+}
+
+size_t hand_worth(struct Card hand[3]) {
+  return (hand[0].rank + hand[1].rank + hand[2].rank) % 10;
+}
+
+void print_game_outcome(struct Card hand_a[3], struct Card hand_b[3]) {
+    size_t hand_a_worth = hand_worth(hand_a);
+    size_t hand_b_worth = hand_worth(hand_b);
+
+    /* Print hands A and B */
+    printf("Player A's Hand:\n");
+    print_hand(hand_a);
+    printf("\n  Worth %lu\n", hand_a_worth);
+    printf("\nPlayer B's Hand:\n");
+    print_hand(hand_b);
+    printf("\n  Worth %lu\n\n", hand_b_worth);
+
+    /* Print winner */
+    if (hand_b_worth == hand_a_worth) {
+      printf("Player B wins from a tie!\n");
+    } else if (hand_b_worth > hand_a_worth) {
+      printf("Player B wins!\n");
+    } else if (hand_b_worth < hand_a_worth) {
+      printf("Player A wins!\n");
+    } else {
+      printf("This outcome should not have occured ...\n");
+    }
+}
+