static Storage Class

The static storage class is used to declare static variables which are popularly used while writing programs in C++ language. Static variables have the property of preserving their value even after they are out of their scope! Hence, static variables preserve the value of their last use in their scope.

We can say that they are initialized only once and exist until the termination of the program. Thus, no new memory is allocated because they are not re-declared. Global static variables can be accessed anywhere in the program.

Properties of static Storage Class

Scope: Local
Default Value: Zero
Memory Location: RAM
Lifetime: Till the end of the program

Note: Global Static variables can be accessed in any function.

Example of static Storage Class

C++

// C++ program to illustrate the static storage class
// objects
#include <iostream>
using namespace std;
 
// Function containing static variables
// memory is retained during execution
int staticFun()
{
    cout << "For static variables: ";
    static int count = 0;
    count++;
    return count;
}
 
// Function containing non-static variables
// memory is destroyed
int nonStaticFun()
{
    cout << "For Non-Static variables: ";
 
    int count = 0;
    count++;
    return count;
}
 
int main()
{
 
    // Calling the static parts
    cout << staticFun() << "\n";
    cout << staticFun() << "\n";
     
 
    // Calling the non-static parts
 
    cout << nonStaticFun() << "\n";
     
    cout << nonStaticFun() << "\n";
     
    return 0;
}

Output

For static variables: 1
For static variables: 2
For Non-Static variables: 1
For Non-Static variables: 1

Storage Classes in C++ with Examples

C++ Storage Classes are used to describe the characteristics of a variable/function. It determines the lifetime, visibility, default value, and storage location which helps us to trace the existence of a particular variable during the runtime of a program. Storage class specifiers are used to specify the storage class for a variable.

Syntax

To specify the storage class for a variable, the following syntax is to be followed:

storage_class var_data_type var_name;

C++ uses 6 storage classes, which are as follows:

auto Storage Class
register Storage Class
extern Storage Class
static Storage Class
mutable Storage Class
thread_local Storage Class

Below is a detailed explanation of each storage class:

Tags:

#Storage Classes and Type Qualifiers #C++ #Misc #CPP #Misc

2. extern Storage Class

4. register Storage Class

static Storage Class

Properties of static Storage Class

Example of static Storage Class

C++

Storage Classes in C++ with Examples

Syntax

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