Dev C Clear Screen
Function 'clrscr' (works in Turbo C++ compiler only) clears the screen and moves the cursor to the upper left-hand corner of the screen. If you are using the GCC compiler, use system function to execute the clear/cls command.
C programming code for clrscr
#include<stdio.h>Dev C used the MICGW compiler while Turbo C uses Borland compiler. Hence due to this, certain inbuilt functions will not work in Dev C. Clrscr is one such function. In the program, we display the message (Press any key to clear the screen) using printf and ask the user to press a key. When the user presses a key screen will be cleared and another message will be printed. Function clrscr doesn't work in Dev C compiler.
#include<conio.h>
int main()
{
printf('Press any key to clear the screen.n');
getch();
clrscr();
printf('This appears after clearing the screen.n');
printf('Press any key to exit..n');
getch();
return0;
}
In the program, we display the message (Press any key to clear the screen) using printf and ask the user to press a key. When the user presses a key screen will be cleared and another message will be printed. Function clrscr doesn't work in Dev C++ compiler. Use the cleardevice function instead of clrscr in graphics mode.
Dev C++ Clear Screen Command
Clear screen in C without using clrscr
#include <stdio.h>#include <stdlib.h>
int main()
{
printf('Press any key to clear the screenn');
getchar();
system('clear');// For Windows use system('cls');
return0;
}
Definition
Dev C Clear Screen
Clears the console buffer and corresponding console window of display information.
Exceptions
An I/O error occurred.
Examples
The following example uses the Clear method to clear the console before it executes a loop, prompts the user to select a foreground and background color and to enter a string to display. If the user chooses not to exit the program, the console's original foreground and background colors are restored and the Clear method is called again before re-executing the loop.
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The example relies on a GetKeyPress method to validate the user's selection of a foreground and background color.
This example demonstrates the CursorLeft and CursorTop properties, and the SetCursorPosition and Clear methods. The example positions the cursor, which determines where the next write will occur, to draw a 5 character by 5 character rectangle using a combination of '+', ' ', and '-' strings. Note that the rectangle could be drawn with fewer steps using a combination of other strings.
Remarks
Using the Clear method is equivalent invoking the MS-DOS cls command in the command prompt window. When the Clear method is called, the cursor automatically scrolls to the top-left corner of the window and the contents of the screen buffer are set to blanks using the current foreground background colors.
Note
Attempting to call the Clear method when a console application's output is redirected to a file throws a IOException. To prevent this, always wrap a call to the Clear method in a try…catch block.