C Programming - Declarations and Initializations - Discussion

Discussion Forum : Declarations and Initializations - Point Out Correct Statements (Q.No. 4)

Declarations and Initializations

Which of the structure is incorrcet?

1 :	`struct aa { int a; float b; };`
2 :	`struct aa { int a; float b; struct aa var; };`
3 :	`struct aa { int a; float b; struct aa *var; };`

1, 2, 3

Answer: Option

Explanation:

Option B gives "Undefined structure in 'aa'" error.

Discussion:

29 comments Page 2 of 3.

Suraj said: 7 years ago

B. is incorrect because there is no declaration of struct aa;

But in c there is pointer *aa so it can declare it self as a garbage value.

(1)

Seema said: 1 decade ago

*var is the pointer variable of structure & var is variable of structre which cannot be created before creation of structre.

Vinod kumar said: 1 decade ago

In this prob. We couldn't create a same structure type within that structure. It will make linking error.

Arulrexin said: 1 decade ago

If we can see that program is that second time used stuct variable with using pointer.

Sakthi said: 7 years ago

Shall I declare struct aa var; outside the structure? Can Anyone explain, please?

Bhanu prataap said: 9 years ago

I can't understand please give me the deep description why the answer is B?

Sandeep Reddy said: 8 years ago

Because pointer and structure are same data types (user defined).

Md kamal said: 8 years ago

I am not understanding this. Please, anyone explain this.

Kirti said: 1 decade ago

Why B is wrong and C is correct? Please explain.

Rashmi said: 1 decade ago

Why B is wrong and C is correct? Please explain.

Post your comments here:

Quick links

Quantitative Aptitude

Verbal (English)

Reasoning

Programming

Interview

Placement Papers