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C# supports the
concept of unsigned and signed integer types. In this article we discuss about
both types of integer datatypes:
Signed Integer type:
Signed integer
types can hold both positive and negative numbers, such as 23,-34 etc. . Tables
shows size and range of all four signed integer datatype. It should be
remembered that wider datatype require more time for manipulation and therefore
it is advisable to use smaller
data
types wherever possible.
Type | Size (Byte) | Min Value | Max Value | Declaration |
Sbyte | 1 | -128 | 127 | Sbyte X = 2; |
Short | 2 | -32768 | 32767 | Short X = -24656; |
Int | 4 | -2,147,483,648 | 2,147,483,647 | Int X = 4585213; |
Long | 8 | -9,223,372,036,854,775,808 | 9,223,372,036,854,775,807 | Long X = 7854295399514; |
Note:
If the value represented by an integer literal exceeds the range of
ulong, a compilation error will occur.
Unsigned integer type:
We can increase the
size of the positive value store in an integer type by making it unsigned. For
example 1 sbyte can store value in the range of -123 to 127, however by making
it byte it can handle value in the range of 0 to 255.
Type | Size (Byte) | Min Value | Max Value | Declaration |
byte | 1 | 0 | 255 | byte X = 2; |
Ushort | 2 | 0 | 65,535 | Ushort X = 65533; |
Uint | 4 | 0 | 4,294,967,295 | Uint X =4294986295; |
Ulong | 8 | 0 | 18,446,744,073,709,551,615 | Ulong X = 11,446744073709551615; |