teaching machines

CS 330 Lecture 13 – Types

February 19, 2014 by Chris Johnson. Filed under cs330, lectures, spring 2014.

Agenda

• what ?s
• program this
• a definition of type
• scalars
• arrays
• enums
• structs
• enums in C vs. enums in Java
• type qualifiers

Program This

Code

blackjack.c

#include <stdio.h>
#include <stdlib.h>

enum rank_t {
  ACE = 1,
  TWO,
  THREE,
  FOUR,
  FIVE,
  SIX,
  SEVEN,
  EIGHT,
  NINE,
  TEN,
  JACK = 10,
  QUEEN = 10,
  KING = 10
};

enum suit_t {
  HEARTS, CLUBS, DIAMONDS, SPADES
};

struct card_t {
  enum rank_t ranque;
  enum suit_t soot;
};

int main(int argc, char **argv) {
  enum rank_t r = 37;
  printf("ACE: %d\n", ACE);
  printf("TWO: %d\n", TWO);
  printf("QUEEN: %d\n", QUEEN);

  struct card_t queen_of_hearts = {QUEEN, HEARTS};
  /* queen_of_hearts.ranque = QUEEN; */
  /* queen_of_hearts.soot = HEARTS; */

/* #define NCARDS 3 */
  const int NCARDS = 3;
  /* int *address_of_NCARDS = (int *) &NCARDS; */
  /* NCARDS = 7; */
  /* *address_of_NCARDS = 1; */
  printf("NCARDS: %d\n", NCARDS);
  struct card_t hand[] = {
    {ACE, CLUBS},
    {ACE, SPADES},
    {ACE, DIAMONDS}
  };

  int score = 0;
  int hay_ace = 0;
  for (int i = 0; i < NCARDS; ++i) {
    score += hand[i].ranque;
    if (hand[i].ranque == ACE) {
      hay_ace = 1;
    }
  } 

  5 ? 6 : 7;

  if (score <= 11 && hay_ace) {
    score += 10; 
  }
  printf("score: %d\n", score);

  return 0;
}

Haiku