Discussion
Is there any difference between the following two statements?
char *p=0;
char *t=NULL;
Answer: B
Correct answer: No
Both give a null pointer. A constant expression with value zero used in a pointer context is a null pointer constant, and NULL is defined to be exactly such a constant, so the two initialisations are equivalent. Using NULL is preferred only because it documents the intent, not because it produces anything different.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development