#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <dos.h>

unsigned int far *ptr ;
void ( *p )( void ) ;

void f1( ) ;
void f2( ) ;

void main( )
{
    f1( ) ;
    f2( ) ;

    printf ( "\nback to main..." ) ;
    exit ( 1 ) ;
}

void f1( )
{
    ptr = ( unsigned int far * ) MK_FP ( _SS, _SP + 2 ) ;
    printf ( "\n%d", *ptr ) ;

    p = ( void ( * )( ) ) MK_FP ( _CS, *ptr ) ;
    ( *p )( ) ;
    printf ( "\nI am f1( ) function " ) ;
}

void f2( )
{
    printf ( "\nI am f2( ) function" ) ;
}