quiz.c

#include <stdio.h>

int (*p[2]) (int x);

int printInt(int a)
{
  printf("%d\n", a);
  (*p[a / 1000]) (++a);
  return a;
}

int doNothing(int a)
{
  return a;
}

main()
{
  p[0] = printInt;
  p[1] = doNothing;

  (*p[0]) (0);

  return 0;
}

That's the right solution =)

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