That's not C, it's C. And that doesn't clear the screen, just fills it with blank lines. Two key differences being that the cursor ends up at the bottom of 50 empty lines (instead of at (0,0)) and that the scrollable buffer is not erased as it would be if you cleared the screen. – brianmearns Aug 9 '13 at 19:57. Clrscr and Getch in C. Clrscr and getch both are predefined function in 'conio.h' (console input output header file). Clrscr It is a predefined function in 'conio.h' (console input output header file) used to clear the console screen. It is a predefined function, by using this function we can clear the data from console (Monitor).

Clear Output Screen using C program. Clear Output Screen - When we run a program, previous output or other command prompt/ Linux Terminal command's output appear there. We can clear the output screen using C program. Functions which are used to clear output screen depend on the compiler, commonly used functions/methods are. The header file graphics.h contains cleardevice function which clears the screen in graphics mode and sets the current position to (0,0). Clearing the screen consists of filling the screen with current background color. Syntax: void cleardevice; Below is the implementation of cleardevice in C.

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