#include <stdio.h>

int foo(int);

void main(void)
{
  int x;

  x = foo(2);
  printf("\nMain %d\n", x);
  x = foo2(2);
  printf("Main %d\n", x);
  x = foo3(2);
  printf("Main %d\n", x);
}



int foo2(int a)
{
  int x, y;

   x = foo(a);
   y = foo3(a);
   printf("\nfoo2 %d %d\n", x, y);
   return(x * y);
}

int foo3(int a)
{
  int x, y;

   x = foo(a);
   y = foo2(a);
   printf("\nfoo3 %d %d\n", x, y);
   return(x * y);
}


int foo(int a)
{
  printf("\nfoo %d \n", a);
  return (a * 45);
}