What data type is uint?

The UINT type is defined in the "WINDOWS API", which corresponds to a 32-bit unsigned integer; the value of the unsigned integer is "2^31-1", that is, "0~4294967295". Unsigned values ​​can avoid mistakenly storing negative numbers and expand the range of representation.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The UINT type is defined in the WINDOWS API, which corresponds to a 32-bit unsigned integer.

Unsigned int (unsigned int): The value is 2^31 - 1, that is: 0~4294967295

Take the decimal 32767 (all the following examples use this number Speaking of things), its binary is:

0111 1111 1111 1111

For the unsigned integer 32767, the highest bit of its binary is called the data bit, that is That 0 is the data bit, and the data bit needs to participate in the operation. If we change 0 to 1, that is, 16 1s, its decimal value is 65535 (that is, 2 to the 15th power, 2 to the 14th power...added until 2 to the power 0), which is different from signed integers.

The root cause of the presence or absence of symbols can be said to be caused by data overflow.

Unsigned values ​​can avoid mistakenly storing negative numbers and expand the range of representation.

For example:

Person within 150 years old unsigned tinyint 1 Unsigned value: 0 to 255.

turtle hundreds of years old unsigned smallint 2 Unsigned value: 0 to 65535.

Dinosaur Fossils Tens of Millions of Years unsigned int 4 Unsigned value: 0 to approximately 4.29 billion.

Sun About 5 billion years unsigned bigint 8 Unsigned value: 0 to about 10 to the 19th power.

Extended information:

The keyword UINT does not exist in C, C

The UINT type is

int derived from unsigned int is signed, and the range is: -2147483648 to 2147483647

uint is an unsigned integer, and the range is 0 to 42949 67295(2^32 -1), that is, the first number does not represent the symbol

In C#, uint is the keyword

Represents an integer type that stores values ​​according to the size and range shown in the following table

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