// This program reads "input" from an array and prints output 
// to the screen.  When the input is even, mult2 is called to
// multiply the argument sent to it by 2 (through repeated 
// addition).  If the input is odd, mult3 is called to multiply
// the value by 3.  Execution stops when a 0 value is read.
// The output is the value, followed by its product.


#include <stdio.h>

int mult2 (int);
int mult3 (int);


int main ()

{
   int input [] = {5, 12, 75, 0};
   int *index = input;
   int x;
   int num;


   x = *index;
   
   while (x != 0) {

      if ((x & 1) == 0) 
         num = mult2 (x);

      else
         num = mult3 (x);

      printf ("0x%08x\n", x);
      printf ("0x%08x\n", num);

      index++;
      x = *index;
   }
}


int mult2 (int y)

{
   int ret;

   ret = y;
   ret += y;

   return ret;
}


int mult3 (int z)

{
   int ret;

   ret = z;
   ret += z;
   ret += z;

   return ret;
}