Programming is essentially the manipulation of many variables

Programming is essentially the manipulation of many variables

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Programming is essentially the manipulation of many variables. The basic variable data types which C++ variables can assume are: int (integers), char (characters) and doubles (real decimals). Declaring a variable simply means letting the computer know that you want to reserve a spot in memory for it. Here is an example of declaring a variable: int number_of_items; Defining (or initializing) a variable is giving it a value. Variables can be defined at their declaration: char initial = 'B'; double x_coordinate = 46.72168000517; Of course, variables can be assigned values at a later time, too: int trees, shrubs; trees = 6; shrubs = trees; It is important to note that characters are represented by numbers in the computer, and a
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Unformatted text preview: char variable can be assigned a numerical value. Characters, Escape Sequences, and Strings Some characters do not have their own symbol and must be referenced by an escape sequence. Some escape sequences are: '\\'-- backslash '\''-- single quotation mark '\"'-- double quotation mark '\b'-- backspace '\n'-- new line '\r'-- carriage return '\t'-- tab A string is a sequence of characters ending in the null character (whose escape sequence is '\0' ). As a beginner, you can usually ignore this definition because strings are usually simply written as constants between double quotes, such as: "florsheim" or "Enter the quantity of shipments:\t"...
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This note was uploaded on 12/12/2011 for the course CIS 101 taught by Professor Keefe during the Spring '08 term at Texas State.

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