CHAPTER 3

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Variables

Variables are used for storing data during program execution.

Data types

Depending on what data you need to store there are several different kinds of data types. The simple types in C# consist of four signed integer types and four unsigned, three floating-point types as well as char and bool.

Data Type Size (bits) Description
sbyteshortintlong 8163264 Signed integers
byteushortuintulong 8163264 Unsigned integers
floatdoubledecimal 3264128 Floating-point numbers
char 16 Unicode character
bool 4 Boolean value

Declaration

In C#, a variable must be declared (created) before it can be used. ...

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