What does it mean in c language

static keyword specifies the storage duration and scope of a variable: Storage duration: Global and static local variables exist throughout the program life cycle. Scope: Global static variables are accessible program-wide; local static variables are only visible within the declaring function.

static The meaning of keyword in C language

static Keywords are used to specify the storage duration and scope of variables. In C language it has the following meaning:

Storage duration:

• Global variables and static local variables use static Key word statement.
• static Variables exist throughout the lifetime of the program, even if the scope in which they reside has ended.

Scope:

• static Global variables are visible throughout the program.
• static Local variables are only visible within the function in which they are declared.

Further explanation:

• Globalstatic Variables:

  • will not be released, even if the program no longer uses them.
  • Allocate a fixed address in memory.
  • Can be shared between multiple files as long as they all contain declarations of variables.

• Local static Variable:

  • Initialized to zero when the function is called.
  • Retains its value across subsequent calls to the function, even if the variable is assigned a different value.
  • is only visible within the declared function and cannot be accessed from outside the function.

Purpose:

• Stores persistent data such as settings or counters.
• Initialize local variables to prevent garbage values.
• Share data between multiple functions while maintaining private access.

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