#include <stdlib.h>

unsigned int pfun ( unsigned int **pa );

int main ( void )
{
  unsigned int *data = NULL;
  unsigned int result;

  result = pfun ( &data );

  return ( 0 );
}

unsigned int pfun ( unsigned int **pa )
{
  static unsigned int i = 10;

   i  = i + 1;
  *pa = &i;     //遵循1

  return i;
}