Interview Questions

1. What is a Token?

Options:

a. Every smallest individual Unit

b. Array of characters

c. Basic building blocks in a program

d. Pre-defined words

Reveal Answer

2. Which of the following are type of token?

Options:

a. Variable

b. Keywords

c. Operators

d. Statements

e. Expressions

Reveal Answer

3. What is Identifier in c used for?

Options:

a. Variable Name

b. Function Name

c. File Name

d. Operators

Reveal Answer

4. Which Special character is allowed as an Identifier in c?

Options:

a. *

b. _(Underscore)

c. #

d. %

Reveal Answer

5. Which of the following is a valid identifier?

Options:

a. a-123

b. a_123

c. a@123

d. 123a

Reveal Answer

6. Which of following is invalid identifier?

Options:

a. xyz%123

b. x_yz

c. xyz_123

d. xyz123

Reveal Answer

7. Which of the following are not valid keywords in "C"

Options:

a. main

b. int

c. printf

d. include

e. char

Reveal Answer

8. What is the size of float?

Options:

a. 4 bytes

b. 4 bits

c. 8 bits

d. 8 bytes

Reveal Answer

9. Enum is by default subtype of ______?

Options:

a. float

b. int

c. double

d. char

Reveal Answer

10. Which of following is valid enumeration data type?

Options:

a. enum Month{jan=0,feb,march=4,april,}

b. enum Month[jan=0,feb,march=4,april,]

c. enum month[Jan, Feb, March];

d. enum month{Jan=0, Feb, March};

Reveal Answer

11. What is the range of integer?

Options:

a. -32768 to 32767

b. -2,147,438,648 to 2,147,438,648

c. 0 to 65535

d. 0 to 4,294,967,295

Reveal Answer

12. What is the range of long integer?

Options:

a. -2,147,438,648 to 2,147,438,648

b. 0 to 4,294,967,295

c. -32768 to 32767

d. 0 to 65535

Reveal Answer

13. What is the range of unsigned integer?

Options:

a. 0 to 65535

b. -2,147,438,648 to 2,147,438,648

c. 0 to 4,294,967,295

d. -32768 to 32767

Reveal Answer

14. What is the range of unsigned long integer?

Options:

a. 0 to 65535

b. -32768 to 32767

c. 0 to 4,294,967,295

d. -2,147,438,648 to 2,147,438,648

Reveal Answer

15. What is the size of integer?

Options:

a. 2 bytes

b. 2 bits

c. 4 bits

d. 8 bytes

Reveal Answer

16. What is the size of a double variable?

Options:

a. 4 bytes

b. 8 bits

c. 8 bytes

d. 4 bits

Reveal Answer

17. How many bytes does a declaration float a, b; occupy?

Options:

a. 1 bytes

b. 4 bytes

c. 8 bytes

d. 16 bytes

Reveal Answer

18. How many bytes are occupied by double precision floating-point?

Options:

a. 2

b. 1

c. 4

d. 8

Reveal Answer

19. What is a variable?

Options:

a. Named memory locations

b. Named for identification of function

c. Name used for symbol

d. None of above

Reveal Answer

20. Which of the following is a valid variable?

Options:

a. abc_123

b. register

c. abc#123

d. abc 123

Reveal Answer

21. Which is a valid syntax for declaring variable?

Options:

a. Data_type variable_name;

b. Variable_name data_type= value;

c. Data_type variable_name= value;

d. Variable_name data_type;

Reveal Answer

22. What is the difference between declaration and definition of a variable?

Options:

a. Both can occur multiple times, but a declaration must occur first.

b. There is no difference between them.

c. A definition occurs once, but a declaration may occur many times.

d. A declaration occurs once, but a definition may occur many times.

e. Both can occur multiple times, but a definition must occur first.

Reveal Answer

23. What will be the output of the program? #include<stdio.h> int main() { int a=10; float b=15.4; printf("values of a=%d & b=%f", a, b); }

Options:

a. 10, 15.400000

b. 15.4, 10

c. 10, 15.0

d. none of above

Reveal Answer

24. What is the output of following program? #include<stdio.h> int main() { int num1=20, num2=10, num3; float result; num3=num1+num2; result=num1/num2; printf("values of num3=%d and result=%f ",num3, result); }

Options:

a. 0.5, 30

b. 30,2.000000

c. 3.0, 0.5

d. 0.3, 5

Reveal Answer

25. What is the output of following program? #include<stdio.h> int main() { int a=1000; float b=6.5; char c; printf("values are %d, %d , %d", sizeof a, sizeof b, sizeof c); }

Options:

a. 2,4,1

b. 4,4,1

c. 4,2,2

d. 2,4,2

Reveal Answer

26. Which escape character can be used to begin a new line in C?

Options:

a. /n

b. \a

c. \m

d. \n

Reveal Answer

Interview Questions and Answer

1. What is a Token?

2. Which of the following are type of token?

3. What is Identifier in c used for?

4. Which Special character is allowed as an Identifier in c?

5. Which of the following is a valid identifier?

6. Which of following is invalid identifier?

7. Which of the following are not valid keywords in "C"

8. What is the size of float?

9. Enum is by default subtype of ______?

10. Which of following is valid enumeration data type?

11. What is the range of integer?

12. What is the range of long integer?

13. What is the range of unsigned integer?

14. What is the range of unsigned long integer?

15. What is the size of integer?

16. What is the size of a double variable?

17. How many bytes does a declaration float a, b; occupy?

18. How many bytes are occupied by double precision floating-point?

19. What is a variable?

20. Which of the following is a valid variable?

21. Which is a valid syntax for declaring variable?

22. What is the difference between declaration and definition of a variable?

23. What will be the output of the program? #include<stdio.h> int main() { int a=10; float b=15.4; printf("values of a=%d & b=%f", a, b); }

24. What is the output of following program? #include<stdio.h> int main() { int num1=20, num2=10, num3; float result; num3=num1+num2; result=num1/num2; printf("values of num3=%d and result=%f ",num3, result); }

25. What is the output of following program? #include<stdio.h> int main() { int a=1000; float b=6.5; char c; printf("values are %d, %d , %d", sizeof a, sizeof b, sizeof c); }

26. Which escape character can be used to begin a new line in C?

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