What does signed mean in c language?

In C language, signed means that the variable can store signed integer values, that is, integers that can represent positive and negative values. The range of a signed variable depends on its type, for example the range of int signed is -2,147,483,648 to 2,147,483,647.

The meaning of signed in C language

What is signed?

In C language, signed is a keyword that indicates that a variable can store signed integer values.

The meaning of signed integers

Signed integers refer to a series of integers that can represent positive and negative values. Positive values ​​are represented by a plus sign ( ), and negative values ​​are represented by a minus sign (-).

Scope of signed variable

The scope of signed variable depends on its type. For example:

• short signed：-32,768 to 32,767
• int signed：-2,147,483,648 to 2,147,483,647
• long signed：-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

##Example:

<code class="c">signed int age = 25;  // 存储 25
signed int temperature = -10;  // 存储 -10</code>

Note:

For unsigned types (using the unsigned keyword), the type can only store non-negative values.
• signed applies to integer variables by default. If unsigned is specified explicitly, the variable will be treated as an unsigned type.
• Signed types occupy the same space as unsigned types.

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