Programming Forums > Application Development > C++

Nickyj1211 · Apr 17th, 2006, 12:04 AM

Just got my crap to start working correctly. Just wanted to know one thing. What is the code for reseting the console screen? As in, in a simple counting and output loop, the numbers wont appear like this:

1
2
3
4
5

But will stay in place, and appear in the same spot. Basically, how do you make it so when you output anything, it restarts at the top, and you cannot read what has already been outputted?

Jimbo · Apr 17th, 2006, 4:27 AM

(Toggle Plain Text)

for(int i = 0; i < 100; i++)
   std::cout << "\n";
std::cout << std::endl;

nnxion · Apr 17th, 2006, 6:17 AM

Quote:

Originally Posted by Nickyj1211

Basically, how do you make it so when you output anything, it restarts at the top, and you cannot read what has already been outputted?

Till ten this works great, but see the text above underlined.

(Toggle Plain Text)

#include <iostream>

using namespace std;

int main()
{
	for(int i = 0; i < 10; i++)
		cout << i << '\b';
	return 0;
}

Please read the "How to post a question" while you're at it.

DaWei · Apr 17th, 2006, 8:13 AM

I would enjoin you to think for forty or fifty seconds until you realize that an output device is a very implementation-specific thing. If you don't believe me, ask a blind person. A general-purpose, 'portable' language attempts to ignore the reality that an output device of some sort will ultimately be required. They leave it to the implementors. Don't go looking in the standard library for such things. You can find your ass with both hands much easier.

Nickyj1211 · Apr 17th, 2006, 11:24 AM

Quote:

Originally Posted by nnxion

Till ten this works great, but see the text above underlined.

(Toggle Plain Text)

#include <iostream>

using namespace std;

int main()
{
	for(int i = 0; i < 10; i++)
		cout << i << '\b';
	return 0;
}

Please read the "How to post a question" while you're at it.

Nim u dont need the simple code to for the loop, i need how to clear out the screen. One of my programming buddies from last year was shown how to do it with some type of "clear screen" code. I remember it being really simple, but i dont know how to use it. Whatever it is, all you would have to do is use the code within the function to erase the previous output. But i dont know what the code is.

DaWei · Apr 17th, 2006, 11:33 AM

It IS very simple. It also depends entirely upon your implementation. Read your responses. Rub two brain-cells together. I'll bet you a hunnert bucks you can't clear the screen on a teletype machine without having to pay for a roll of paper. If you want to talk about kiddie machines like one finds on zillions of desktops, say so.

Infinite Recursion · Apr 17th, 2006, 11:35 AM

I'm going to assume you are using windows. Below is non-portable code to clear the screen.

(Toggle Plain Text)

#include <conio.h>
...
clrscr();

Nickyj1211 · Apr 17th, 2006, 11:42 AM

Quote:

Originally Posted by Infinite Recursion

I'm going to assume you are using windows. Below is non-portable code to clear the screen.

(Toggle Plain Text)

#include <conio.h>
...
clrscr();

THANK YOU! thats what i have been looking for.. thats what i meant. Thanks for your help

Nickyj1211 · Apr 17th, 2006, 11:52 AM

Quote:

Originally Posted by DaWei

It IS very simple. It also depends entirely upon your implementation. Read your responses. Rub two brain-cells together. I'll bet you a hunnert bucks you can't clear the screen on a teletype machine without having to pay for a roll of paper. If you want to talk about kiddie machines like one finds on zillions of desktops, say so.

I dont understand what you mean, the clrscr() code works. Am i missing something? It doesnt scroll the window or anything... what am i missing?

nnxion · Apr 17th, 2006, 12:00 PM

Nicky you _really_ need to listen to DaWei. conio.h is not portable, we could give you code for *nix with the curses library, or some code for you Playstation Portable, but it's not going to be portable. Comprende?
You might also like to search the forums, this question has been asked multiple times and some semi portable solutions have been provided.

Apr 17th, 2006, 12:04 AM	#1
Nickyj1211 Newbie Join Date: Apr 2006 Posts: 15 Rep Power: 0	Quick question HELP! Just got my crap to start working correctly. Just wanted to know one thing. What is the code for reseting the console screen? As in, in a simple counting and output loop, the numbers wont appear like this: 1 2 3 4 5 But will stay in place, and appear in the same spot. Basically, how do you make it so when you output anything, it restarts at the top, and you cannot read what has already been outputted? Last edited by Nickyj1211; Apr 17th, 2006 at 12:27 AM.

Apr 17th, 2006, 4:27 AM	#2
Jimbo Battle Programmer Join Date: Feb 2006 Location: Bellevue, WA, USA Posts: 770 Rep Power: 3	(Toggle Plain Text) for(int i = 0; i < 100; i++) std::cout << "\n"; std::cout << std::endl; for(int i = 0; i < 100; i++) std::cout << "\n"; std::cout << std::endl;

Apr 17th, 2006, 8:13 AM	#4
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	I would enjoin you to think for forty or fifty seconds until you realize that an output device is a very implementation-specific thing. If you don't believe me, ask a blind person. A general-purpose, 'portable' language attempts to ignore the reality that an output device of some sort will ultimately be required. They leave it to the implementors. Don't go looking in the standard library for such things. You can find your ass with both hands much easier. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Apr 17th, 2006, 11:33 AM	#6
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	It IS very simple. It also depends entirely upon your implementation. Read your responses. Rub two brain-cells together. I'll bet you a hunnert bucks you can't clear the screen on a teletype machine without having to pay for a roll of paper. If you want to talk about kiddie machines like one finds on zillions of desktops, say so. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Apr 17th, 2006, 11:35 AM	#7
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,473 Rep Power: 8	I'm going to assume you are using windows. Below is non-portable code to clear the screen. (Toggle Plain Text) #include <conio.h> ... clrscr(); #include <conio.h> ... clrscr(); __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

Apr 17th, 2006, 12:00 PM	#10
nnxion Programming Guru Join Date: Jun 2005 Location: elemental plane Posts: 1,429 Rep Power: 5	Nicky you _really_ need to listen to DaWei. conio.h is not portable, we could give you code for *nix with the curses library, or some code for you Playstation Portable, but it's not going to be portable. Comprende? You might also like to search the forums, this question has been asked multiple times and some semi portable solutions have been provided. __________________ "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for." -- Socrates

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Programming Forums > Application Development > C++

Quick question HELP!