Question

how is an extern variable different from a static variable

Answer 1

1. static allows u to use the variable in one program but extern allows u to use a variable in multiple programs.

2. scope of a static variable is it can be accessible only to that particular function/block where it is defined. whereas, Extern can be accessible to all the functions/block of the program.

3. Static is declared inside a function/block. whereas, extern is declared outside all functions/block.



Hope this helps!