Download e-book for iPad: Computers For Smart People by Robert S. Swiatek

By Robert S. Swiatek

ISBN-10: 0981784399

ISBN-13: 9780981784397

A basic ebook on computing, with emphasis on what programming involves.

Table of contents
Introduction
1. components of language
2. Our programming language
3. dossier makeup
4. A record program
5. dossier access
6. software abends
7. the net account display
9. extra Modifications
10. Assigning values
11. Updating fields
12. Programming standards
13. The zip code file
14. Programming creativity
15. including files and calling a program
16. The referred to as application and using
17. Fuzzy math
18. Deleting accounts
19. universal statements
20. Arrays
21. Down within the dumps
22. Base systems
23. Sorting bubbles
24. A software in action
APPENDIX - KEYWORDS
OPERATORS

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Additional resources for Computers For Smart People

Example text

It’s not necessary to keep it there since it will only take someone longer to read the program and realize that this code is unreachable. Now consider another group of statements: If file-switch = 0 go to next-step else if file-switch = 1 go to start-read end-if end-if screen(1,7) “file switch: ” file-switch In this case you will agree that the last line can be executed. This would be true if the field file-switch has a value greater than 1. But now suppose that in our program this field will only be 0 or 1.

Whenever we print a detail line we increment line-counter by 1 in the statement: line-counter = line-counter + 1 When the counter gets to be greater than 54, it’s time for a new set of headings so we’ll perform the print-headings paragraph and return. Since the counter is initially 54 and we just added 1 to line-counter, we perform the heading routine before printing the first detail line, rather than printing the heading after starting the program. Note that once we print the headings we have to reset line-counter or else we will have headings for every account number, which we don’t want.

Since we do have the value keyword, we have the option of giving a field a value in one of two ways. One is initialization and the other an assignment statement, which often changes the value. Since this concept is so important in programming, let us consider a few more examples. Assume the following define x character(6) value “Handel” define y character(4) If the following line is executed, y=x x will still have the value Handel but y will have the value Hand, 47 since the field y only has room for 4 characters, it can only accept that many and so truncation will occur.

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Computers For Smart People by Robert S. Swiatek


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