How can i output string using Int 65H?

Question

I need to output some string using interrupt Int 65 but its giving me error i am using Turbo C++ 4.0 Windows 7 Windows 8 64Bit Version

#include<stdio.h>
#include<fcntl.h>
#include<io.h>
#include<BIOS.H>
#include<DOS.h>

void interrupt (*oldint65)( );
char st[80] = {"Hello World$"};
void interrupt newint65(void);

void main()
{
  oldint65 = getvect(0x65);
  setvect(0x65, newint65);
  geninterrupt (0x65);
  geninterrupt (0x65);
  geninterrupt (0x65);
  setvect(0x65, oldint65);
}

void interrupt newint65( )
{
  _AH = 0x09;
  _DX=(unsigned int)st;
  geninterrupt (0x21);
}

i have attached error image please help me where i am doing wrong

Error image

Copy and paste the full text of the error instead of an image that shows half the error. — indiv, May 23 '15 at 16:42
Is there a way you can use a more recent compiler and the Windows 7 API? I'm really amazed if the interrupt number is still valid with all these Windows versions. — Thomas Matthews, May 23 '15 at 18:21
in windows 7 its valid but i dont know its work in windows .8 or 10..... — Bilal Maqsood, May 23 '15 at 18:25

score 2 · Accepted Answer · edited May 23 '15 at 17:02

2

Function definition is not matching/Clashing with the declaration.. Check:

void interrupt (*oldint65)();
void interrupt *newint65(void);

A single name interrupt Can't have 2 declarations..

Change in program should be as follows:

Declaration:

void interrupt(*newint65)(void);

Definition:

void interrupt(*newint65)( ) 
{ 
  _AH = 0x09; 
  _DX=(unsigned int)st; 
  geninterrupt (0x21); 
}

edited May 23 '15 at 17:02

Morten Kristensen

7,412
4
32
52

answered May 23 '15 at 16:53

user388229

109
5

score 2 · Answer 2 · answered May 23 '15 at 17:11

2

Try: Declaration:

void interrupt_newint65(void);

Definition:

 void interrupt_newint65( ) 
 { 
 _AH = 0x09; 
 _DX=(unsigned int)st; 
 geninterrupt (0x21); 
 }

answered May 23 '15 at 17:11

user388229

109
5

please view remaining code also giving me error why?? – Bilal Maqsood May 23 '15 at 17:22

How can i output string using Int 65H?

2 Answers2