Intercepting the heap.c

#include <stdio.h>

int heap[1024];
unsigned long loc = 0;

void* malloc(unsigned long size) {
  unsigned long oldLoc = loc;
  loc += size;
  void* ptr = &heap;
  return ptr + oldLoc;
}

int main(int argc, char* argv[]) {
  
  int* addr = malloc(sizeof(int) * 2);
  int* addr2 = malloc(sizeof(int) * 6);
  
  printf("Hello, world!\n");
  
  *(addr+0) = 10;
  *(addr+1) = 20;
  *(addr2+0) = 15;
  *(addr2+1) = 25;
  *(addr2+2) = 35;
  *(addr2+3) = 45;
  
  printf("\n\nloc: %lu\n\n", loc);
  
  printf("%d\n", *(heap+0));
  printf("%d\n", *(heap+1));
  printf("%d\n", *(heap+2));
  printf("%d\n", *(heap+3));
  printf("%d\n", *(heap+4));
  
  return 0;
}