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.
Test Helpful For: ECAT Entry Test
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Computer Input/Output Practice Test Online With Explanation

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1. Which function is used to read a string from the user?

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

3. What will the function getchar() do?

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

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

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

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

8. Which function is used to read formatted input from the keyboard?

9. Which format specifier is used for character output?

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

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

12. Which of the following functions detects end-of-file?

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

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

15. Which header file is required for getchar() and putchar()?

16. Which symbol is used to access the address of a variable?

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

18. Which of the following correctly opens a file for writing in C?

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

20. Which header file is used for standard input and output functions in C?

21. How many arguments can printf() accept?

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

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

24. What does ferror() check?

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


 

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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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