Interview Questions

1. Always array size should be -----------?

Options:

a. N

b. N-1

c. N+1

d. N*1

Reveal Answer

2. The array index should starts with

Options:

a. 0

b. 1

c. 2

d. 3

Reveal Answer

3. In which of the following array declaration is correct

Options:

a. int array[];

b. int []array;

c. array int[];

d. none of above

Reveal Answer

4. In which of the following declaration and initialization are correct?

Options:

a. int array[4]={100,200,300,400};

b. int array[]={100 200 300 400};

c. int array={100,200,300,400}

d. int array[3]={100,200,300,400};

Reveal Answer

5. In two dimensional array the two indexes represents [ex: int array[][];]

Options:

a. 1st index represents rows and 2nd index represents blocks.

b. 1st index represents columns and 2nd index represents sub arrays.

c. 1st index represents blocks and 2nd index represents sub arrays.

d. 1st index represents rows and 2nd index represents columns.

Reveal Answer

6. What will be the output of the following program? #include<stdio.h> int main() { int a[5],i; static int b[5]; for(i=0;i<5;i++) { printf("\n%d\t%d\t%d",i,a[i],b[i]); } }

Options:

a. 0 3160 0 1 -1 0 2 8653 0 3 9247 0 4 1912 0

b. 0 0 0 1 0 0 2 2 0 3 0 0 4 0 0

c. 0 0 0 1 0 -1 2 0 316 3 0 5874 4 0 5432

d. 0 0 0 1 0 0 2 0 0 3 0 0 4 0 0

Reveal Answer

7. What will be the output of the above program? #include<stdio.h> int main() { static float arr[]={1.2,12,2.4,24,3.5,35}; int i; for(i=0;i<=5;i++) printf("%f",arr[i]); }

Options:

a. 1.0,12,2.0,24,3.0,35

b. 1.200000 12.00000 2.400000 24.000000 3.500000 35.000000

c. Compilation Error

d. 1.200 12.000 2.4000 24.000 3.5000 35.000

Reveal Answer

8. main() { int arr1[10],arr2[10],i; for(i=0;i<9;i++) { arr1[i]='A'+i; arr2[i]='a'+i; printf("%d\t",arr2[i]-arr1[i]); } } What will be the output of the above program?

Options:

a. 32 32 32 32 32 32 32 32 32

b. A B C D E F G H I J K

c. Compilation error

Reveal Answer

9. #include<stdio.h> main() { static int b[]={10,20,30,40,50}; int i; for(i=0;i<=4;i++) printf("%d\t",i[b]); } What will be the output of the above program?

Options:

a. Syntax Error

b. Compilation Error

c. 10 20 30 40 50

d. Run time error

Reveal Answer

10. In the given program which line of code will shows the error? main() { int arr[25],i; for(i=0;i<=100;i++) { arr[i]=100; printf(“%d”,arr(i)); } }

Options:

a. Compilation Error

b. arr(i)=100

c. In printing statement

d. No output

Reveal Answer

11. What will be the output of the following program? #include<stdio.h> main() { static int n[3][3]={2,4,3, 6,8,5, 3,5,1}; printf("%d\n %d\n %d",n,n[1][1],n[2][2]); }

Options:

a. Garbage value 8 1

b. 2 8 3

c. 4 6 1

d. 4 6 1

Reveal Answer

12. In C, if you pass an array as an argument to a function, what actually gets passed?

Options:

a. Value of elements in array

b. First element of the array

c. Base address of the array

d. Address of the last element of array

Reveal Answer

13. Is it is necessary to declare size of array the array size in the arguments declaration part of the function.

Options:

a. True

b. False

Reveal Answer

14. Which of the following is an example of array?

Options:

a. Derived Types

b. Fundamentals types

c. User-Define types

d. None of above

Reveal Answer

15. Which of the following is correct syntax for initialization of one dimensional array?

Options:

a. Num[3]={0 0 0};

b. Num[3]={0,0,0};

c. Num[3]={0;0;0};

d. None of above

Reveal Answer

16. What will be the output of the following program? #include<stdio.h> int main() { int arr[1]; arr[0]=10; printf("%d\n",0[arr]); }

Options:

a. 1

b. 10

c. 0

d. 6

Reveal Answer

17. The type of elements in an array must be the same.

Options:

a. True

b. False

Reveal Answer

18. When an array is declared, C automatically initializes its element to zero.

Options:

a. True

b. False

Reveal Answer

19. Which of the following is a valid statement?

Options:

a. #define WEEKDAYS 7

b. int array[WEEKDAYS];

c. const int WEEKDAYS = 7;

d. int array[WEEKDAYS] = 7;

e. char array[WEEKDAYS]= {M, T, W, T, F, S, S};

Reveal Answer

20. Accessing an array outside its range is a compile time error.

Options:

a. True

b. False

Reveal Answer

21. A char type variable cannot be used as subscript in an array.

Options:

a. True

b. False

Reveal Answer

22. In C, by default, the first subscript is zero.

Options:

a. True

b. False

Reveal Answer

23. An error occurs when you don’t specify the dimensions of the array at the time of initializing multidimensional array.

Options:

a. True

b. False

Reveal Answer

24. We can use maximum four dimensions for an array.

Options:

a. True

b. False

Reveal Answer

25. In declaring an array, the array size can be a constant or variable or an expression.

Options:

a. True

b. False

Reveal Answer

Interview Questions and Answer

1. Always array size should be -----------?

2. The array index should starts with

3. In which of the following array declaration is correct

4. In which of the following declaration and initialization are correct?

5. In two dimensional array the two indexes represents [ex: int array[][];]

6. What will be the output of the following program? #include<stdio.h> int main() { int a[5],i; static int b[5]; for(i=0;i<5;i++) { printf("\n%d\t%d\t%d",i,a[i],b[i]); } }

7. What will be the output of the above program? #include<stdio.h> int main() { static float arr[]={1.2,12,2.4,24,3.5,35}; int i; for(i=0;i<=5;i++) printf("%f",arr[i]); }

8. main() { int arr1[10],arr2[10],i; for(i=0;i<9;i++) { arr1[i]='A'+i; arr2[i]='a'+i; printf("%d\t",arr2[i]-arr1[i]); } } What will be the output of the above program?

9. #include<stdio.h> main() { static int b[]={10,20,30,40,50}; int i; for(i=0;i<=4;i++) printf("%d\t",i[b]); } What will be the output of the above program?

10. In the given program which line of code will shows the error? main() { int arr[25],i; for(i=0;i<=100;i++) { arr[i]=100; printf(“%d”,arr(i)); } }

11. What will be the output of the following program? #include<stdio.h> main() { static int n[3][3]={2,4,3, 6,8,5, 3,5,1}; printf("%d\n %d\n %d",n,n[1][1],n[2][2]); }

12. In C, if you pass an array as an argument to a function, what actually gets passed?

13. Is it is necessary to declare size of array the array size in the arguments declaration part of the function.

14. Which of the following is an example of array?

15. Which of the following is correct syntax for initialization of one dimensional array?

16. What will be the output of the following program? #include<stdio.h> int main() { int arr[1]; arr[0]=10; printf("%d\n",0[arr]); }

17. The type of elements in an array must be the same.

18. When an array is declared, C automatically initializes its element to zero.

19. Which of the following is a valid statement?

20. Accessing an array outside its range is a compile time error.

21. A char type variable cannot be used as subscript in an array.

22. In C, by default, the first subscript is zero.

23. An error occurs when you don’t specify the dimensions of the array at the time of initializing multidimensional array.

24. We can use maximum four dimensions for an array.

25. In declaring an array, the array size can be a constant or variable or an expression.

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