Interview Questions

1. ________ Header file is included in the program to perform console I/O operation?

Options:

a. stdio.h

b. std.h

Reveal Answer

2. Variable number of arguments can be passed to toprintf() library function?

Options:

a. True

b. False

Reveal Answer

3. Which data type defines ‘%s’ specifier?

Options:

a. unsigned long

b. long

c. char array

d. string

Reveal Answer

4. Which of the following is the invalid library function?

Options:

a. printf("10%d", 456);

b. printf("%10d", 456);

c. printf("%10.2d", 456.4);

d. printf("%d %d", 456, 454.4);

Reveal Answer

5. What will be the output of the following program #include<stdio.h> int main() { int n=123; printf("%d", -n); }

Options:

a. -123

b. 123

c. 0

d. none of above

Reveal Answer

6. What will be the output of printf("%06d", 9876);

Options:

a. 9876

b. 987600

c. 009876

d. 980076

Reveal Answer

7. What will be the output of the program

Options:

a. 98.78

b. 0098.77

c. 98.7754

d. 98.0077

Reveal Answer

8. What does ‘&’ symbol define in console I/O Function?

Options:

a. assign value to variable

b. logical operator

c. address of operator

d. none of above

Reveal Answer

9. Which of following is a valid statement?

Options:

a. scanf("%d, %f, %d" &a, &b, &c);

b. scanf("%d", "%d", "%d", &a, &b, &c);

c. scanf("%d %f %d", &a, &b, &c);

d. All of above

Reveal Answer

10. Which of following is a valid statement?

Options:

a. scanf("%d, %f, %d" &a, &b, &c);

b. scanf("%d", "%d", "%d", &a, &b, &c);

c. scanf("%d %f %d", &a, &b, &c);

d. All of above

Reveal Answer

11. Which of following is a valid statement?

Options:

a. scanf("%d, %f, %d" &a, &b, &c);

b. scanf("%d", "%d", "%d", &a, &b, &c);

c. scanf("%d %f %d", &a, &b, &c);

d. All of above

Reveal Answer

12. Which of the following defines the correct functionality of getchar()?

Options:

a. Assign character without pressing enter key

b. echo’s character instantly without pressing enter key

c. Write a single character after pressing enter key

d. Read a single character after pressing enter key

Reveal Answer

13. Which of the following defines the correct functionality of getch()?

Options:

a. read character instantly without displaying it

b. assign character instantly without pressing enter key

c. display character followed by enter key

d. Both A & B

Reveal Answer

14. The function of gets() is to read _______from the standard input and store it in char array.

Options:

a. The string of characters including new line character

b. The array of strings including new line character

c. The string of characters excluding new line character

d. The array of strings excluding new line character

Reveal Answer

15. What is the functionality of puts()?

Options:

a. Store the string of character to char array

b. Write the string of character on o/p screen

c. Read a single character

d. Read string of character

Reveal Answer

16. Statement 1: Gets function assign string to char array; Statement 2: Puts function receive array of string.

Options:

a. Statement 1 is True; Statement 2 is True;

b. Statement 1 is True; Statement 2 is False;

c. Statement 1 is False; Statement 2 is True;

d. Statement 1 is False; Statement 2 is False;

Reveal Answer

Interview Questions and Answer

1. ________ Header file is included in the program to perform console I/O operation?

2. Variable number of arguments can be passed to toprintf() library function?

3. Which data type defines ‘%s’ specifier?

4. Which of the following is the invalid library function?

5. What will be the output of the following program #include<stdio.h> int main() { int n=123; printf("%d", -n); }

6. What will be the output of printf("%06d", 9876);

7. What will be the output of the program

8. What does ‘&’ symbol define in console I/O Function?

9. Which of following is a valid statement?

10. Which of following is a valid statement?

11. Which of following is a valid statement?

12. Which of the following defines the correct functionality of getchar()?

13. Which of the following defines the correct functionality of getch()?

14. The function of gets() is to read _______from the standard input and store it in char array.

15. What is the functionality of puts()?

16. Statement 1: Gets function assign string to char array; Statement 2: Puts function receive array of string.

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