fscanf segfault reading into an array

Question

Why is fscanf in this code giving me a segfault?

int main(int argc, char *argv[])
{
  FILE *file = fopen(argv[1], "r");
  int n = atoi(argv[2]);

  char *words[n]; int i=0;
  while ((fscanf(file, "%s ", &words[i])) != EOF) i++;
}

Answer 1

Because you didn't allocate memory for your words[i]. They are just pointers point to random memory addresses.