C Pointer size

#include <stdio.h>
/*from   w  ww.  jav  a  2 s  .co m*/
int main(void)
{
  int number = 0;                 
  int *pointer = NULL;            

  number = 10;

  pointer = &number;            

  printf("pointer's size: %d bytes", sizeof(pointer)); /* Output the size   */
  return 0;
}