Storage Classes - C programming quiz questions and answers

1 Regarding the scope of the variables identify the incorrect statement:

A Automatic variables are automatically initialized to 0

B Static variables are automatically initialized to 0

C The address of a register variable is not accessible

D Static variables cannot be initialized with any expression

Answer: Option [A]

By default Automatic variables are initialized to Garbage value.

2 What will be the output of the following code segment?

	void fn()
	{
		static int i=10;
		printf("%d",++i);
	}
	main()
	{
		fn();
		fn();
	}

A 10 10

B 11 11

C 11 12

D 12 12

Answer: Option [C]

3 Which of the following is not a proper storage class in 'C'?

A auto

B dec

C static

D extern

Answer: Option [B]

The storage classes in C are auto, extern, static and global. dec is not a storage class.

4 What is the output of the following code?

	main()
	{
		static int num=8;
		printf("%d",num=num-2);
		if(num!=0)
		main();
	}

A 8 6 4 2

B Infinite output

C 6 4 2 0

D invalid because main function cannot call itself

Answer: Option [C]

5 Value of static storage variable

A changes during different function calls

B persists between different function calls

C increases during different function calls

D decreases during different function calls

Answer: Option [B]

C quiz questions with answers - Storage classes MCQs