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first program

summary

    Each language has a basic structure and format for writing programs.

    We will look at a very simple program to see the basic format.

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first program

    Each language has a basic structure and format for writing programs.

    We will look at a very simple program to see the basic format.

    Most programs have some simple form of output. We will use the most simple versions possible and avoid discussing any intricacies until a little later.

Hello World

    The classic first example is the Hello World program. This is a program that simply states “Hello World”.

    These are not just for beginners. It is common for professional programmers to start with a simple Hello World program when learning a new language or even just becoming familiar with a new compiler or development system.

    You may recall the chapter on Hello World programs in different languages.

Pascal

other

   “10. Get into a rut early: Do the same processes the same way. Accumulate idioms. Standardize. The only difference (!) between Shakespeare and you was the size of his idiom list - not the size of his vocabulary.” —Alan Perlis, Epigrams on Programming, ACM’s SIGPLAN Notices Volume 17, No. 9, September 1982, pages 7-13

   “35. Everyone can be taught to sculpt: Michelangelo would have had to be taught how not to. So it is with the great programmers.” —Alan Perlis, Epigrams on Programming, ACM’s SIGPLAN Notices Volume 17, No. 9, September 1982, pages 7-13

chapter contents

• prorgam format
• lexical elements
• character set
• valid identifiers
• reserved words
• program headers
• statements
• variables
• simple input
• sequence

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