#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <time.h>
struct IntArray{
  int *data;
  size_t length;
};

void readintarray(struct IntArray *input) {
  printf("inputlength:%zu\n", input->length);
  for (size_t i = 0; i < input->length; i++) {
	printf("digit:%d = %d\n", i, input->data[i]);
  }
}

struct IntArray *create_int_array(size_t length) {
  struct IntArray *myintarray = malloc(sizeof(struct IntArray)); /* allocate memory for struct */

  myintarray->data = malloc(sizeof(int) * length); 	/* make sure the pointer in the struct points to the array */
  myintarray->length = length;  //forgot to actually assign a value to the struct

  if (myintarray->data == NULL) {
	exit(0);
  }
  
  return myintarray;
}

int main() {
  srand(time(NULL));
  printf("how many numbers?\n");
  int length;
  scanf("%d", &length);

  struct IntArray *myintarray = create_int_array(length);

  for (int i = 0; i < length; i++) {
    myintarray->data[i] = rand() % 10;
    printf("number:%d = %d\n",i,myintarray->data[i]);
  }  

  readintarray(myintarray);

  free(myintarray->data);
  free(myintarray);
  
  return 0;
}