Computer Input Output Test Online

Mustansar KhanLast Updated: October 15, 2025

Start your preparation for Computer Input Output Test Online. This online test contains important MCQs from past papers. Attempting this test will help you prepare for Annual Exams and Entry Tests. Read the questions carefully and select the correct option below to see your result.

Important Computer Input Output Question and Answer

Total Questions: 50
Time Allowed: 25 Minutes
Total Marks: 50
How to Attempt Test: Please choose the right Option in MCQ-type question.
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Computer Input/Output Practice Test Online With Explanation

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1. Which I/O function is used for file input/output?

2. Which of the following format specifiers is used for reading a float?

3. Which format specifier is used for character output?

4. How do you read a character array (string) using scanf()?

5. What is the return type of fopen()?

6. Which function can be used to flush the output buffer?

7. Which escape sequence is used to print a new line?

8. What is the correct format specifier for printing an integer in C?

9. What is the return type of printf()?

10. What does ferror() check?

11. What does fflush(stdin); do?

12. Which function is used to read a character from a file?

13. What does scanf("%d", &x); do?

14. What will the function getchar() do?

15. Which of the following can be used to print hexadecimal values?

16. What is the output of printf("%c", 'A' + 1);?

17. Which of the following correctly reads an integer input?

18. Which function is used to write a block of data to a binary file?

19. Which function displays a string followed by a newline character?

20. Which function is used to get the current position of the file pointer?

21. Which function pauses the program until a key is pressed?

22. Which of the following functions writes a string to a file?

23. Which function is safer to use instead of gets()?

24. Which function reads a single character and echoes it to the screen?

25. Which of the following functions allows formatted input from a file?


 

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Mustansar KhanLast Updated: October 15, 2025

Mustansar Khan

Hey Exam Warriors! I'm Mustansar Khan, your ally in conquering tests. Uncover strategies, real-time experiences, and expert advice to turn your study sessions into victories. Let's gear up for success!
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