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

void desallocation(void* ptr) {
  if (ptr != NULL) {
    printf("Desallocation a l'adresse      : %p\n", ptr);
    free(ptr);
  }
  else {
    printf("Attention, tentative de desallocation de NULL");
  }
}

void main(void) {
  size_t taille = 500000;
  int* ptr = (int*) calloc(taille, sizeof(int));
  if (ptr == NULL) {
    printf("Allocation avortee\n");
  }
  else {
    printf("Allocation reussie a l'adresse : %p\n", ptr);
  }
  desallocation(ptr);
  ptr = NULL;
}