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

int main(void) {
  int num_elements = 5;

  int my_data[5] = {1, 2, 3, 4, 5};

  printf("my_data is: %p\n", my_data);
  printf("my_data is: %d\n", my_data[0]);
  printf("my_data is: %d\n", *my_data);

//   equivalent
  printf("my_data is: %d\n", my_data[1]);
  printf("my_data is: %d\n", *(my_data+1));



  

  // allocating 5 * 8 bytes on the heap
  // returns the address of the heap where the alloc was
//   int *data = malloc(num_elements * sizeof(int));

//   data[0] = 1;
//   data[1] = 2;
//   data[2] = 3;
//   data[3] = 4;
//   data[4] = 5;

//   printf("%d\n", data[0]);
//   printf("%d\n", data[1]);
//   printf("%d\n", data[2]);
//   printf("%d\n", data[3]);
//   printf("%d\n", data[4]);

//   // this reallocs to 1 greater, so 6 elements
//   data = realloc(data, (num_elements + 1) * sizeof(int));



//   data[5] = 6;
//   printf("%d\n", data[5]);

  return 0;
}