#include <stdio.h> 

//======================================================================
// Funtions Prototypes
void calc_function(int*);	

//======================================================================
int main ()
{
  int a=5;
  printf("before calc_function : a = %d \n",a);
  
  calc_function(&a);
  printf("after  calc_function : a = %d \n", a);
  
  return 0;
}
//======================================================================
void calc_function(int *param)
{	
	printf("before calc : param = 0x%lx \n",(long)param);
	printf("before calc : *param = %d \n",*param);

	*param = *param+2 ;
	
	printf("after  calc : param = 0x%lx \n",(long)param);
	printf("after  calc : *param = %d \n",*param);
}	
//======================================================================