Basic Programming In Computer
Unlike many BASICs to come, Dartmouth BASIC was a compiler, which meant that it converted your entire program in one fell swoop into machine code that the computer could understand, rather than. Choose a programming language. Computer programming is done as essentially a set of written instructions that the computer follows (also known as binary coding). These instructions can be written in a number of different 'languages', or which are simply different ways of organizing the instructions and text.
10 CLS 20 PRINT 'Helloooooooooooooo, 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 Finally, on line 80, I'll use END, which will keep me from reaching line 90.Discussion From that example, it's fairly easy to deduce what each command does.CLS An abbreviation that stands for the words CLear Screen. In the above program, when you used CLS on line 60, all of the words that were printed to the screen were wiped away. PRINT Writes to the screen.
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Basics Of Coding
There are commands for printing to other things, like a printer, but that's to be discussed later. Each new PRINT command will start printing on a new line. To insert a blank line, don't specify a string to print.
The syntax for 'PRINT' is: PRINT 'whatever you want to be printed here' END It stops the program at that line; that is, anything that's added after that won't show. That's why the PRINT command on line 90 didn't print anything.
Basic Computer Language Download
The END command can be included in control structures to end the program if a condition is met. This will be discussed with control structures.What is happening?Line 10 the display is cleared.Lines 20 through 50 print text to the screen.Line 60 clears the display.Line 70 shows the message you should see after you run this program.Line 80 ends the program.Line 90 helps to show that a END statement stops the program at that point.Given the state of computer speed today you should not see the paragraph displayed by lines 20 through 50, it should be cleared by the CLS statement on Line 60 before you have a chance to see it. If you slow the program down you can see the program write the message to the screen. Line 70 is then written to the screen/display then Line 80 stops everything. Line 90 never, ever runs.