➨ C Programming Pointers

1. What is (void*)0?

A. Representation of NULL pointer B. Representation of void pointer C. Error D. None of above - Answer&Explanation Answer:Option A Explanation : No answer description available for this question. View Answer

2. Can you combine the following two statements into one? char *p; p = (char*) malloc(100);

A. char p = *malloc(100); B. char *p = (char) malloc(100); C. char *p = (char*)malloc(100); D. char *p = (char *)(malloc*)(100); - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

3. In which header file is the NULL macro defined?

A. stdio.h B. stddef.h C. stdio.h & stddef.h D. math.h - Answer&Explanation Answer:Option C Explanation : The macro "NULL" is defined in locale.h, stddef.h, stdio.h, stdlib.h, string.h, time.h, and wchar.h. View Answer

4. How many bytes are occupied by near, far and huge pointers (DOS)?

A. near=2 far=4 huge=4 B. near=4 far=8 huge=8 C. near=2 far=4 huge=8 D. near=4 far=4 huge=8 - Answer&Explanation Answer:Option A Explanation : near=2, far=4 and huge=4 pointers exist only under DOS. Under windows and Linux every pointers is 4 bytes long. View Answer

5. If a variable is a pointer to a structure, then which of the following operator is used to access data members of the structure through the pointer variable?

A. . B. * C. & D. -> - Answer&Explanation Answer:Option D Explanation : No answer description available for this question. View Answer

6. What would be the equivalent pointer expression for referring the array element a[i][j][k][l]

A. ((((a+i)+j)+k)+l) B. *(*(*(*(a+i)+j)+k)+l) C. (((a+i)+j)+k+l) D. ((a+i)+j+k+l) - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

7. A pointer is _____?

A. A keyword used to create variables B. A variable that stores address of an instruction C. A variable that stores address of other variable D. All of the above - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

8. The operator used to get value at address stored in a pointer variable is

A. * B. & C. && D. || - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer