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This chapter is from the book

This chapter is from the book

Summary

In today's lesson, you learned how the computer stores information. You focused on the data types that store data by value, including int, uint, long, ulong, bool, char, short, ushort, float, double, decimal, byte, and ubyte. In addition to learning about the data types, you learned how to name and create variables. You also learned the basics of setting values in these variables, including the use of literals. Table 3.4 lists the data types and information about them.

Table 3.4 C# Data Types

C# Data Type

NET Data Type

Size in Bytes

Low Value

High Value

sbyte

System.Sbyte

1

-128

127

byte

System.Byte

1

0

255

short

System.Int16

2

-32,768

32,767

ushort

System.UInt16

2

0

65,535

int

System.Int32

4

-2,147,483,648

2,147,483,647

uint

System.UInt32

4

0

4,294,967,295

long

System.Int64

8

–9,223,372,036, 854,775,808

9,223,372,036, 854,775,807

ulong

System.UInt64

8

0

18,446,744,073 709,551,615

char

System.Char

2

0

65,535

float

System.Single

4

1.5 x 10-45

3.4 x 1038

double

System.Double

8

5.0 x 10-324

1.7 x 1010308

bool

System.Boolean

1

false (0)

true (1)

decimal

System.Decimal

16

1.0 x 10-28

approx. 7.9 x 1028


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