The keyword representing the static storage category in C language is

The keyword representing the static storage category in C language is static. The static storage category is used to specify variables or functions that persist throughout the life cycle of the program and includes the following characteristics: Global variables: have file scope and are initialized to 0 when the program starts. Local variables: Remain within the function even after the function is executed, and are initialized to 0 when the function is first called. Function: can only be accessed in the file in which it is declared, has file scope.

Keywords representing static storage categories in C language

In C language, keywords representing static storage categories The keyword is static.

Static Storage Class

The static storage class specifies that a variable or function remains in existence throughout the lifetime of the program. It has the following characteristics:

• Global variables: Global variables declared using the static keyword are visible throughout the program and are initialized to 0 when the program starts.
• Local variables: Local variables declared using the static keyword remain within the function even after the function has completed execution. They are initialized to 0 the first time the function is called.
• Functions: Functions declared using the static keyword can only be accessed within the file in which they are declared, that is, they have file scope.

Usage

The syntax for using the static keyword to declare a variable or function is as follows:

<code class="c">static <data_type> <variable_name>;
static <return_type> <function_name>(<parameter_list>);</code>

For example:

<code class="c">static int global_variable; // 全局变量，在整个程序中可见

static void local_function() { // 局部函数，仅在声明它的文件中可见
    // ...
}</code>

Advantages

Using static storage categories can bring the following advantages:

• Improve the maintainability and readability of the code.
• Reduce memory usage because static variables only allocate memory space once.
• Allow local variables to maintain state between function calls.

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