By Greg M. Perry
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Additional resources for Absolute Beginner's Guide to Programming (2nd Edition)
Throughout this book, when you see the term source program, that text is referring to your program before it is compiled into machine-readable code. 30 ABSOLUTE BEGINNER’S GUIDE TO PROGRAMMING, SECOND EDITION The Language Translator Your computer cannot actually understand BASIC, C, Java, or any of the other programming languages. ” you might yell. ” Even so, the computer cannot understand C++ either, but it is easy for a program to translate C++ to the actual 1s and 0s that the computer does understand.
The table of characters was standardized and is known today as the ASCII table (pronounced askee, so if you don’t know-ee, you can ASCII). 1 shows a partial listing of the ASCII table. ASCII stands for American Standard Code for Information Interchange. 1 PROGRAMMING LANGUAGES: THE EARLY YEARS 43 (continued) Character ASCII Code Decimal Equivalent 2 00110010 50 3 00110011 51 9 00111001 57 ? 00111111 63 A 01000001 65 B 01000010 66 C 01000011 67 a 01100001 97 b 01100010 98 Each of the ASCII values has a corresponding decimal number associated with it.
A programmer learns to develop patience early in his programming career. He learns that proper design is critical to a successful program. Perhaps you have heard the term systems analysis and design. This is the name given to the practice of analyzing the problem to be programmed and then designing the program from that analysis. Complete books and college courses have been written about systems analysis and design. This chapter attempts to cover the highlights of systems analysis and design, letting you see what mainstream computer programmers go through before writing programs.
Absolute Beginner's Guide to Programming (2nd Edition) by Greg M. Perry