Scope of a variable x++ Programming language

What is scope of a variable?

The scope of a variable defines the area in the code where an item can be accessed.

• Instance variables are declared in class declarations, and can be accessed from any methods in the class or from methods that extend the class.
• Local variables can be accessed only in the block where they were defined.

// An example of how variable scopes work.
class ScopeExample
{
    // The variable a is declared within the class.
    int a;

    // Because the method below is declared within the class,
    // it can access all the variables defined within the class.
    void aNewMethod()
    {
        // The variable b is declared within the method.
        // It can only be accessed by this method.
        int b;
    }
}

Loop Scope

Loop Scope: Variables declared in a loop have loop scope. They are accessible only within the loop where they are declared.

void myMethod()
{
    for (int i = 0; i < 5; i++)
    {
        int loopVar = i; // loopVar has loop scope
    }
    // loopVar is not accessible here
}