Today's "Sawal" 26-12-11

Solve it
#include<stdio.h>
#include<conio.h>
#define cube(x) (x*x*x )
void main()
{
   int a,b;
  b=3;
  a=cube(++b/b++);
printf("a=%d and b=%d",a, b);
getch();
}