Home/ECAT/ECAT Computer Input Output Test Online

ECAT Computer Input Output Test Online

Mustansar KhanLast Updated: May 1, 2025

ECAT Computer Science Input/OutputTest

ECAT Computer Science Chapter 20 Input Output Online Test

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 Computer Online Test Interview Questions about Computer All Universities Entrance Test Recruitments Tests

ECAT Input/Output Test Online MCQs

Please wait...

Page 1 of 2

Uncategorized

1. Which function resets the file pointer to the beginning of the file?

startfile()

reset()

seekstart()

rewind()

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

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

FILE *

int

void *

char

4. How many arguments can printf() accept?

Only two

It depends on the format string

Fixed to three

Only one

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

filepos()

rewind()

fseek()

ftell()

6. Which function is used to print output to the screen in C?

cin

cout

scanf()

printf()

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

Reads a character

Reads an integer

Prints an integer

Writes to a file

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

flush()

fflush(stdout);

clear();

remove();

9. Which function is used to move the file pointer?

ftell()

rewind()

fread()

fseek()

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

scanf()

fscanf()

printf()

fprintf()

11. Which mode opens a file for both reading and writing, starting at the beginning?

"w+"

"r+"

"rw"

"a+"

12. Which of the following is a non-formatted input/output function?

scanf()

fscanf()

puts()

printf()

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

14. What is the format specifier for reading a string?

15. What will the function getchar() do?

Read a single character from the keyboard

Take string input

Display a character

Read an integer

16. What does fflush(stdin); do?

Flushes output buffer

Writes to a file

Reads a string

Clears the input buffer

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

pause()

break()

getchar()

getch()

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

int

void

float

char

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

getch()

fgetc()

getchar()

putch()

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

scanf("%s", str);

scanf("%s", &str);

scanf("%c", str);

scanf("%f", str);

21. Which function is used to close an open file?

closefile()

fclose()

fileclose()

stop()

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

getc()

freadchar()

getch()

readchar()

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

fprintf()

fwrite()

putc()

fputs()

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

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

gets()

getchar()

getch()

scanf()

Page 2 of 2

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

fputs()

puts()

putc()

fwrite()

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

scanf()

get()

input()

printf()

28. Which function would you use to input values into multiple variables?

printf()

putch()

getc()

scanf()

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

printf()

fopen()

scanf()

getch()

30. Which of the following is used for binary file input/output?

fopenb()

read() and write()

getc() and putc()

fread() and fwrite()

31. Which format specifier is used for character output?

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

stdio.h

string.h

conio.h

stdlib.h

33. Which format specifier is used to print unsigned integers?

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

putchar()

print()

printf()

puts()

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

36. Which function is used to write a character to a file?

printf()

putc()

fputchar()

fwrite()

37. Which of the following is a formatted output function for files?

printf()

fputs()

puts()

fprintf()

38. Which function prints a single character to the screen?

putchar()

putch()

puts()

printf()

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

scanf("%i", &x);

scanf("%d", x);

scanf("%d", &x);

scanf("%f", &x);

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

fopen("file.txt", "a+");

fopen("file.txt", "rb");

fopen("file.txt", "r");

fopen("file.txt", "w");

41. Which escape character is used for a horizontal tab?

42. What does ferror() check?

File name

File permissions

If an error occurred during file I/O

End of file

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

scanf()

getch()

puts()

fgets()

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

45. What is the return value of scanf() when it successfully reads one input?

-1

NULL

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

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

rewind()

fseek()

ftell()

feof()

48. What is the correct format specifier to print a double?

%lf

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

math.h

stdio.h

stdlib.h

string.h

You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.

UET Peshawar Entry Test 2025 Registration Online ETEA Test D...
ECAT Statistics Test Set 17
ECAT Statistics Test Set 16
ECAT Statistics Test Set 15
ECAT Statistics Test Set 14
ECAT Statistics Test Set 13
ECAT Statistics Test Set 12
ECAT Statistics Test Set 11
ECAT Statistics Test Set 10
ECAT Statistics Test Set 9

Mustansar KhanLast Updated: May 1, 2025

Facebook Twitter Reddit WhatsApp Share via Email Print

ECAT Computer Input Output Test Online

ECAT Computer Science Input/OutputTest

ECAT Computer Science Chapter 20 Input Output Online Test

ECAT Input/Output Test Online MCQs

Uncategorized

You Might Also Like

Mustansar Khan

Leave a Reply Cancel reply

ECAT Computer Science Input/OutputTest

ECAT Computer Science Chapter 20 Input Output Online Test

ECAT Input/Output Test Online MCQs

Uncategorized

You Might Also Like

Mustansar Khan

Your Related

ECAT English Sentence Completion Online Test

ECAT Chemistry Fundamental Principles of Organic Chemistry Test Online

ECAT English Antonyms Online Test

ECAT Chemistry Atomic Structure Online Test

ECAT Physics Alternating Current Test Online

ECAT Chemistry Environmental Chemistry Test Online

Leave a Reply Cancel reply