#include <stdio.h>

#define squareMacro(x) x*x

int square(int x) {
   return x * x;
}

int main(void) {
   int x = 9;
   int y = 9;
   printf("square(x) = %d\n",        square(x));
   printf("squareMacro(y) = %d\n\n", squareMacro(y));

   x = 9;
   y = 9;
   printf("square(x+1) = %d\n",        square(x+1));
   printf("squareMacro(y+1) = %d\n\n", squareMacro(y+1));

   x = 9;
   y = 9;
   printf("square(x++) = %d\n",      square(x++));
   printf("squareMacro(y++) = %d\n", squareMacro(y++));
   printf("x = %d, y = %d\n\n", x, y);

   x = 9;
   y = 9;
   printf("square(++x) = %d\n",      square(++x));
   printf("squareMacro(++y) = %d\n", squareMacro(++y));
   printf("x = %d, y = %d\n\n", x, y);
   return 0;
}