Interview Questions

1. Which operator is used to represent the address of a variable?

Options:

a. &

b. *

c. %

d. ^

Reveal Answer

2. Which operator is used to represent the value at address?

Options:

a. &

b. *

c. <<

d. >>

Reveal Answer

3. #include<stdio.h> int main() { int i=10; printf("\n i=%u",&i); printf("\n i=%d",i); printf("\n i=%d",*(&i)); } What will be the output of the Above program?

Options:

a. i=6487628 i=10 i=10

b. 10,10,address

c. 0,10,10

d. Garbagevlaue,10,10

Reveal Answer

4. Is it is possible to point the char and float pointer variable to char and float type?

Options:

a. True

b. False

Reveal Answer

5. Pointer is an example of which of the following type?

Options:

a. Derived Type

b. Fundamental Type

c. User-Defined Type

d. None of the above

Reveal Answer

6. An float pointer

Options:

a. Points to the another floating pointer

b. Points to itself

c. Points to the address of an integer value

d. None of above

Reveal Answer

7. In the expression *ptr=&a, what does & signify?

Options:

a. Address of a

b. Address of ptr

c. Value of a

d. None of the above

Reveal Answer

8. Which of the following is a syntactically correct pointer declaration?

Options:

a. float *x;

b. float* x;

c. float * x;

d. All above are correct

Reveal Answer

9. If a1=&x and a2=&a1, what will be the output generated by the expression **a2?

Options:

a. Address of a2

b. Address of a1

c. Value of x

d. Address of x

Reveal Answer

10. If a1=2 and a2=&a1 then what does a2++ depict(consider the address value of a1 to be 3802)

Options:

a. 3

b. 3803

c. 3804

d. 3802

Reveal Answer

11. What will be the expression for obtaining the address of the ith element of an array A?

Options:

a. A[i]

b. &A[i]

c. *A[i]

d. A[&i]

Reveal Answer

12. What is the size of an integer & float pointer?

Options:

a. 2 & 4

b. 4 & 4

c. 2 & 2

d. 1 & 1

Reveal Answer

13. Pointer constant is the address of the memory locations.

Options:

a. True

b. False

Reveal Answer

14. Pointer variable are declared using the address of operator

Options:

a. True

b. False

Reveal Answer

15. It is impossible to cast a pointer to float as a pointer to integer.

Options:

a. True

b. False

Reveal Answer

16. An integer can be added to a pointer.

Options:

a. True

b. False

Reveal Answer

17. When an array is passed as argument to a function, an address of array is passed.

Options:

a. True

b. False

Reveal Answer

18. Pointers cannot be used as formal parameter in the header to function definitions.

Options:

a. True

b. False

Reveal Answer

19. What will be the output of the following program? int main() { int a =35, m,n; m=&a; //address of a is 1008 n=m; m++=n++; a++; printf("a=%d, m=%d, n=%d", a , m, n); return 0; }

Options:

a. a=36, m=1010, n = 1010

b. a=3, m=100, n = 1010

c. a=36, m=6487616, n=6487616

Reveal Answer

20. What is the output of the following program main() { int a=100,b,c,d; b=&a; c=&b; d=&c; printf("%d %d %d %d", a,b,c,d); }

Options:

a. 100 100 100 100

b. 100 101 100 100

c. 100 100 100 101

d. 100 100 102 101

Reveal Answer

21. What is the output: main() { float a=7.99999; float b,c; b=&a; c=b; printf("%d %d %d\n", &a, b, c); printf("%f %f %f %f\n", a, (&a), b, *c); }

Options:

a. 6487612 6487612 6487612

b. 7.999990 7.999990 7.999990 7.999990

c. 6487612 6487612 6487612 7.999990 7.999990 7.999990 7.999990

d. 6487612 6487612 6487612 7.999990 7.999990 7.999990 7.999990 6487612 6487612 6487612

Reveal Answer

Interview Questions and Answer

1. Which operator is used to represent the address of a variable?

2. Which operator is used to represent the value at address?

3. #include<stdio.h> int main() { int i=10; printf("\n i=%u",&i); printf("\n i=%d",i); printf("\n i=%d",*(&i)); } What will be the output of the Above program?

4. Is it is possible to point the char and float pointer variable to char and float type?

5. Pointer is an example of which of the following type?

6. An float pointer

7. In the expression *ptr=&a, what does & signify?

8. Which of the following is a syntactically correct pointer declaration?

9. If a1=&x and a2=&a1, what will be the output generated by the expression **a2?

10. If a1=2 and a2=&a1 then what does a2++ depict(consider the address value of a1 to be 3802)

11. What will be the expression for obtaining the address of the ith element of an array A?

12. What is the size of an integer & float pointer?

13. Pointer constant is the address of the memory locations.

14. Pointer variable are declared using the address of operator

15. It is impossible to cast a pointer to float as a pointer to integer.

16. An integer can be added to a pointer.

17. When an array is passed as argument to a function, an address of array is passed.

18. Pointers cannot be used as formal parameter in the header to function definitions.

19. What will be the output of the following program? int main() { int a =35, m,n; m=&a; //address of a is 1008 n=m; m++=n++; a++; printf("a=%d, m=%d, n=%d", a , m, n); return 0; }

20. What is the output of the following program main() { int a=100,b,c,d; b=&a; c=&b; d=&c; printf("%d %d %d %d", a,b,c,d); }

21. What is the output: main() { float a=7.99999; float b,c; b=&a; c=b; printf("%d %d %d\n", &a, b, c); printf("%f %f %f %f\n", a, (&a), b, *c); }

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