Question

Which of the following statement is false?

(a) A variable defined once can be defined again with different scope

(b) A single variable cannot be defined with two different types in the same scope

(c) A variable must be declared and defined at the same time

(d) A variable refers to a location in memory

The question was posed to me in quiz.

I need to ask this question from Declarations in portion Data Types, Operators and Expressions in C of C

Answer 1

Right option is (c) A variable must be declared and defined at the same time

Explanation: It is not an error if the variable is declared and not defined. For example – extern declarations.