Question

What does scope mean?
O O
The kinds of problem that a function
can solve.
O
The types of values that a variable
can hold.
O
The amount of domain knowledge
required to write a particular
program
The region of code in which a variable
is visible.
O​

Answer 1

Answer:

• Access specified of member variables doesn't effect scope of them within a class. Variables declared inside a method have method level scope and can't be accessed outside the method. Note : Local variables don't exist after method's execution is over.

Answer 2

Explanation:

Scope of an identifier is the part of the program where the identifier may directly be accessible. In C, all identifiers are lexically(or statically) scoped. C scope rules can be covered under the following two categories.

There are basically 4 scope rules:

Scope Meaning

File Scope Scope of a Identifier starts at the beginning of the file and ends at the end of the file. It refers to only those Identifiers that are declared outside of all functions. The Identifiers of File scope are visible all over the file Identifiers having file scope are global

Block Scope Scope of a Identifier begins at opening of the block / ‘{‘ and ends at the end of the block / ‘}’. Identifiers with block scope are local to their block

Function Prototype Scope Identifiers declared in function prototype are visible within the prototype

Function scope Function scope begins at the opening of the function and ends with the closing of it. Function scope is applicable to labels only. A label declared is used as a target to goto statement and both goto and label statement must be in same function