#include <limits.h>

int foo(int a) {
  return a + a;
}

int bar(int a) {
  return a + 2;
}

int baz(int a) {
  return a + 3;
}

int indirect_version(int (*fn)(int), int (*fn2)(int), int (*fn3)(int)) {
  int i, b = 0;

  for (i = 0; i < INT_MAX >> 2; ++i) {
    b += fn(b) + fn2(b) - fn3(b);
  }

  return b;
}

int main(int argc, char *argv[]) {
  return indirect_version(&foo, &bar, &baz);
}