What is the value range of int32 in computer programming?

This article mainly introduces the value range of int32 in computer programming, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article.

Values for int32 range from "- 2147483648" to "2147483647", while values for int64 range from "- 9223372036854775808" to "9223372036854775808".

Value range of int32

The range of 32-bit int type variables in the computer, where the int type is a signed integer.

The positive number is represented as the original code in the computer, and the highest bit is the symbol bit:

The original code of 1 is 0000 0000 0000 0001

The original code of 2147483647 is 0111 1111 1111 1111

So the largest positive integer is 2147483647.

A negative number is represented as a complement in a computer, and the highest bit is a symbol bit:

-1:

The original code is 1000 0000 0000 0000 0001

The inverse code is 1111 1111 1111 1110

The complement is 1111 1111 1111

-2147483647:

The original code is 1111 1111 1111

The inverse code is 1000 0000 0000 0000

The complement is 1000 0000 0000 0000 0001

So the smallest negative number is-2147483647? No, it's not.

In binary, 0 has two table methods.

The original code of + 0 is 0000 0000 0000

The original code of-0 is 1000 0000 0000 0000

Since only one zero is needed, take-0 as the smallest number-2147483648.

The complement of-2147483648 is expressed as 1000 0000 0000 0000 0000000, and there is no original code in 32 bits.

Note that this complement is not a real complement, the real complement is 1 1000 0000 0000 0000, overflow.

So the signed 32-bit int type integer is-214748364802147483647

Description:

Int range-2147483648 to 2147483647

Int16- values range from-32768 to 32767

Int32- values range from-2147483648 to 2147483647

Int64- values range from-9223372036854775808 to 9223372036854775808

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