Line 90 shows that an END statement stops the program.Line 70 shows the message you should see after you run this program.

Lines 20 through 50 print text to the screen.

This will be discussed with control structures. The END command can be included in control structures to end the program if a condition is met. That's why the PRINT command on line 90 didn't print anything. The syntax for 'PRINT' is: PRINT '' END It stops the program at that line that is, anything that's added after that won't show. To insert a blank line, don't specify a string to print.

Each new PRINT command will start printing on a new line. There are commands for printing to other things, like a printer, but that's to be discussed later. In the above program, when you used CLS on line 60, all of the words that were printed to the screen were wiped away. On the next line, I'll use CLS, which will clear everything I just printed, so you won't even see the preceding text.'Īlso, you can't give CLS a line to PRINT it won't actually do anything'įinally, on line 80, I'll use END, which will keep me from reaching line 90.'įrom that example, it's fairly easy to deduce what each command does.ĬLS An abbreviation that stands for the words CLear Screen. This text is being printed via the PRINT command.' I'm making the sample program clear and understandable.' 10 CLS 20 PRINT 'Hello, world!' 30 PRINT 'I'm making the sample program clear and understandable.' 40 PRINT 'This text is being printed via the PRINT command.' 50 PRINT 'On the next line, I'll use CLS, which will clear everything I just printed, so you won't even see the preceding text.' 55 PRINT 'Also, you can't give CLS a line to PRINT it won't actually do anything' 60 CLS 'These words actually do nothing they do not PRINT or anything.' 70 PRINT 'Finally, on line 80, I'll use END, which will keep me from reaching line 90.' 80 END 'Like CLS, putting a string here does nothing it does not PRINT or anything.' 90 PRINT 'this is not really my answer.' Output (CLS)

Latexit cant find cls