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clrscr();

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clrscr();
eLliDKraM
post 26 Nov, 2005 - 06:50 PM
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I've been seeing more and more clrscr();'s typed into programs and decided that it would be more efficient than just typing many /n's tongue.gif. However, whenever I type clrscr();, it will not build because it cannot find the function clrscr. How am I seeing it work with other programs where it does not work with mine?
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jaredolympia
post 26 Nov, 2005 - 07:25 PM
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Are you trying to find a function that clears the screen? If you are, I ran into that problem a little while ago. This should do the trick if you're running the program in MSDOS (non-ansi code). The clrscr() function might be compiler specific. Either way, I really don't know why to be honest.

CODE
system("CLS");


The following site contains more DOS commands:
EasyDOS Command Index

Hope this helps!

Sincerely,
jaredolympia

This post has been edited by jaredolympia: 26 Nov, 2005 - 11:50 PM
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eLliDKraM
post 26 Nov, 2005 - 07:55 PM
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That does not seam to work either. For both clrscr and this, I am supposedly missing the prototype.
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Mrafcho001
post 26 Nov, 2005 - 08:11 PM
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Clearing The Screen

system("cls"); should work just fine
clrscr() is in conio.h
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eLliDKraM
post 26 Nov, 2005 - 08:15 PM
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Yeah I include conio.h. It doesn't work.

EDIT: Using Dev C++ and PellesC compilers.

This post has been edited by eLliDKraM: 26 Nov, 2005 - 08:16 PM
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Amadeus
post 26 Nov, 2005 - 10:32 PM
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Here's a little hint...none of the functions you have specified are ANSI compliant. conio.h itself is not ANSI compliant. Non ANSI compliant code is only usable in some compilers or platforms. If you use it, your code is automatically not cross platform compliant.

I know there is a tendancy these days to learn code, and come up with habits that are specific to certain platforms/compilers...this is not acceptable as a professional developer.

N/M...I'll write an article about it. It's important.
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jaredolympia
post 27 Nov, 2005 - 12:02 AM
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Using system("cls") works on Dev-C++. Perhaps you are using an outdated version. You can run the following code to check.

CODE
#include <stdio.h>

int main(void)
{
   puts("Hello");
   system("PAUSE");
   system("CLS");
   system("PAUSE");
   return 0;
}


This post has been edited by jaredolympia: 27 Nov, 2005 - 12:04 AM


Attached File(s)
Attached File  cls.zip ( 5.54k ) Number of downloads: 107
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Wizzy
post 27 Nov, 2005 - 03:36 AM
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These never used to exist for C++, it was C's source code.

Check your compiler environment while i test this,
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microchip
post 27 Nov, 2005 - 04:16 AM
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But you can use C code in C++, so if you plan to use conio.h, there's nothing stopping you...

Just a thought, wouldn't sending a newpage ASCII code clear the screen?
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Wizzy
post 27 Nov, 2005 - 04:31 AM
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umm even if i use that program including either stdlib or stdio i get the msg:

QUOTE
ISO C++ does not support 'long long'


(using latest version)
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microchip
post 27 Nov, 2005 - 05:45 AM
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Argh yeah, you're right about that. Maybe putting

extern "C" {
}

around the #include would help...
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eLliDKraM
post 27 Nov, 2005 - 09:13 AM
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I'm using the newest version of Dev C++ and I use it to compile C and
CODE
#include <stdio.h>

int main(void)
{
  puts("Hello");
  system("PAUSE");
  system("CLS");
  system("PAUSE");
  return 0;
}
does not work.
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