MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -In computing, CLS (for clear screen) is a command used by the command-line interpreters COMMAND.COM and cmd.exe on DOS, Digital Research FlexOS, IBM OS/2, Microsoft Windows and ReactOS operating systems to clear the screen or console window of commands and any output generated by them.

Detailed explanation-2: -There are several methods to clear the console or output screen and one of them is clrscr() function. It clears the screen as function invokes. It is declared in “conio. h” header file.

Detailed explanation-3: -[8] In computer science, CLS (for clear screen) is a command used by the command line interpreters COMMAND.COM and cmd.exe on DOS, Digital Research FlexOS[1], IBM OS/2, [2], Microsoft Windows[3] and reactOS to clear the screen or console window of commands and any output they generate.

Detailed explanation-4: -I used to use cmd back in windows, and the command line I used a lot, was cls . It’s kind of like the clear command used in Linux, but it cleans the screen permanently. If you use the clear command, it just scroll down, so that you don’t see the command you where working on.

Detailed explanation-5: -public static void clrscr() //Clears Screen in java try if (System.getProperty("os.name").contains("Windows")) new ProcessBuilder("cmd", “/c", “cls").inheritIO().start().waitFor(); else Runtime.getRuntime().exec("clear"); catch (IOException | InterruptedException ex)