Clrscr() function in c programming

Question

1.00/5 (1 vote)

See more:

Dear:
I want to create my own function in c which function is to clear the screen i know their is an already predefine function clrscr() but i want to make it own can anyone help me please.
Thanks

Posted 29-Aug-13 9:43am

Mufasil Muhammad Iqbal

Updated 29-Aug-13 9:46am

v2

Add a Solution

Comments

[no name] 29-Aug-13 15:54pm

You would need to ask a question or describe some sort of a problem before you could reasonably expect any kind of help.

enhzflep 29-Aug-13 16:44pm

"can anyone help me please." Looks mighty like a question to me - even if the punctuation leaves something to be desired..

Mufasil Muhammad Iqbal 30-Aug-13 2:30am

Sir i have made this program " #include #include void clr(void); void clr(void) { clrscr(); } int main() { clr(); printf("Hi"); getch(): return(0); } " now i make this program and submit it to my sir he says you cant use clrscr(); function in your program you have to create your own clrscr(); function name clr(); with help of gotoxy(); function in c in turbo c so can you tell me how i do this even can you tell me the concept how clrscr(); function runs?

enhzflep 29-Aug-13 16:52pm

You make mention of clrscr() - that makes me think you're using (16-bit) TurboC, Is that the case? If so, you can simply write 80x25x2 bytes to the memory at 0xB8000.

I.e
char unsigned *textModeBuffer = 0xB8000;
memset(textModeBuffer, 0, 80*25*2);

If you're not using TurboC and making 16bit programs, you may wish to look into the Console Functions page at MSDN: MSDN: Console Funtions

Here's another post on more-or-less the same thing - I had to look it up, sine it's been so long since I could directly access memory like this, that I'd forgotten.
Where is the text-mode video buffer

OT: (Though I can tell you that mode 0x13 is 320x200 x 8bit, and that the memory buffer is at 0xA0000 - ahhh the memories)

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Fredrik Bornander · Answer 1 · 2013-09-03T04:30:00

Something like this would work;

C++

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

void clr() {
    system("cls");
}

int main(int argc, char* argv[]) {
    printf("I won't show up because the screen will be cleared!\r\n");
    clr();
    printf("Hello, world!\r\n");
    return 0;
}

Hope this helps,
Fredrik

Richard MacCutchan · Answer 2 · 2013-09-03T04:49:00

Solution 2

https://www.google.com/search?q=gotoxy+turbo+c[^].

Posted 3-Sep-13 4:49am

Richard MacCutchan