Thread: dancing doll implementation

I am trying to implement a dancing doll in c and i found that the code snippet which i have does not run on visual studio.
It requires a file dos.h and the visual studio is unable to find it. So on which platform should i run it. I tried running the same on cygwin as well but of no use. ANY IDEA ON WHY IT IS UNABLE TO FIND THE INCLUDE FILE DOS.H

insert

Code:

#include <conio.h>
# include <dos.h>
# include <stdio.h>
void interrupt our();
void interrupt (*prev)();
char far *scr =(char far *) 0xB800000L;
void main()
{
unsigned long int far *p;
p=(char far *)36;
prev=*p;
*p=our;
keep(0,500);
getch();
}
void interrupt our()
{
int i;
for(i=0 ;i<=3999;i+=2)
{
if(*(scr+i)>='A'&& *(scr+i)<='Z')
  *(scr+i)+=32;
  else
  if(*(scr+i)>='a'&& *(scr+i)<='z')
  *(scr +i)-=32;
}
(*prev)();
}

I need some header files from Borland Turbo C++!!! - C and C++ - Forums at ProgrammersHeaven.com

i think its written for the borland turbo c++ compiler. above is a link to a post with same question and a link for the borland c++ compiler.

Originally Posted by roaan

I am trying to implement a dancing doll in c and i found that the code snippet which i have does not run on visual studio.
It requires a file dos.h and the visual studio is unable to find it. So on which platform should i run it. I tried running the same on cygwin as well but of no use. ANY IDEA ON WHY IT IS UNABLE TO FIND THE INCLUDE FILE DOS.H

insert

Code:

#include <conio.h>
# include <dos.h>
# include <stdio.h>
void interrupt our();
void interrupt (*prev)();
char far *scr =(char far *) 0xB800000L;
void main()
{
unsigned long int far *p;
p=(char far *)36;
prev=*p;
*p=our;
keep(0,500);
getch();
}
void interrupt our()
{
int i;
for(i=0 ;i<=3999;i+=2)
{
if(*(scr+i)>='A'&& *(scr+i)<='Z')
  *(scr+i)+=32;
  else
  if(*(scr+i)>='a'&& *(scr+i)<='z')
  *(scr +i)-=32;
}
(*prev)();
}

far pointers are meant to access VDU memory. But you are treating it some strange way. What exactly you mean by

Code:

*(scr+i)+=32;

In my opinion you should keep some variable increment that . You are treating char far * as though it is contains some alphabet.