#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>

void test_all() {

}

int foo(int a);

bool is_odd(int n);

bool is_even(int n) {
  if (n == 0) {
    return true;
  } else if (n == 1) {
    return false;
  } else {
    return is_odd(n - 1);
  }
}

bool is_odd(int n) {
  if (n == 0) {
    return false;
  } else if (n == 1) {
    return true;
  } else {
    return is_even(n - 1);
  }
}

/*typedef int suit_t;
const suit_t HEARTs = 1;
const suit_t DIAMONDS = 2;
const suit_t CLUBS = 3;
const suit_t SPADES = 4;*/

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

void show_suit(suit_t s) {
  if (s == HEARTS) {
    printf("coeur\n");
  } else if (s == DIAMONDS) {
    printf("carreau\n");
  } if (s == CLUBS) {
    printf("trèfle\n");
  } else if (s == SPADES) {
    printf("pique\n");
  } else {
    assert(false && "what happened here?");
  }
}

void better_show_suit(suit_t s) {
  switch (s) {
    case HEARTS:
      printf("coeur\n");
      break;
    case DIAMONDS:
      printf("carreau\n");
      break;
    case CLUBS:
      printf("trèfle\n");
      break;
    case SPADES:
      printf("pique\n");
      break;
  }
}

void better_show_suit_2(suit_t s) {
  switch (s) {
    case HEARTS:
    case DIAMONDS:
      printf("rouge\n");
      break;
    case CLUBS:
    case SPADES:
      printf("noir\n");
      break;
    default:
      printf("other\n");
  }
}

int main(int argc, char *argv[]) {
  test_all();

  suit_t s = DIAMONDS;
  better_show_suit(HEARTS);
  return 0;

  for (size_t i = 0; i < argc; i++) {
    printf("%lu: '%s'\n", i, argv[i]);
  }

  /*int x = 5;
  int y = (x > 3) ? (x + 2) : (x - 3);

  int z;
  if (x > 3) {
    z = x + 2;
  } else {
    z = x - 3;
  }

  printf("Lecture 11\n");
  printf("%d\n", (x > 3) ? (x + 2) : (x - 3));*/

  return 0;
}

int foo(int a) {
  return a + 1;
}