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ECAT Computer Elements of “C” Test Online

Mustansar KhanLast Updated: May 1, 2025

ECAT Computer Elements of “C” Test

ECAT Computer Science Chapter 19 Elements of “C” 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 Elements of “C” Test Online MCQs

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1. Which data type can be used to store a decimal number?

short

float

char

int

2. What is the output of printf("%d", 3 == 3);?

false

true

3. Which of the following is used to create a multi-line comment in C?

/* */

4. What will the statement int a = 10, b = 3; printf("%d", a % b); print?

5. Which operator is used to compare if two values are not equal?

6. Which of these is not a storage class in C?

static

private

auto

7. Which function is used to find the length of a string?

strlen()

sizeof()

strlength()

length()

8. Which operator is used to access the value stored at an address?

9. Which of the following is used to store a group of related values?

Array

Variable

Function

Constant

10. Which of the following is the correct syntax to declare a string?

char name[20];

str name;

string name[20];

char name(20);

11. What is the correct syntax for a ternary operator in C?

condition ? if : else

(condition) ? (true value) : (false value)

if (condition) then else

if ? then : else

12. Which of the following is a valid arithmetic operator in C?

13. Which of these is a bitwise operator?

14. Which header file includes the strlen() function?

string.h

math.h

stdio.h

stdlib.h

15. Which is the correct declaration of a function in C?

func myFunction()

void myFunction();

def myFunction()

function myFunction()

16. What is the output of: printf("%d", sizeof(5.5));?

Depends on the compiler

17. Which of the following is used for dynamic memory allocation?

scanf()

printf()

malloc()

exit()

18. Which operator is used to increment a value by 1?

19. Which symbol is used to begin a preprocessor directive?

20. Which of the following is not a keyword in C?

extern

volatile

static

loop

21. Which format specifier is used for double values?

%lf

22. What is the correct way to initialize a pointer to NULL?

int p = NULL;

int *p = 0;

int *p = NULL;

Both A and B

23. Which of the following is a fundamental element of a C program?

Object

Interface

Function

Class

24. What does the keyword static do?

Allows modification

Makes a variable global

Preserves the value of a variable between function calls

Frees memory

25. What will be the output of sizeof(char) on most systems?

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26. Which of the following is a compound assignment operator?

27. Which of the following can be used to copy strings in C?

copystr()

strcpy()

strcopy()

assign()

28. Which of the following is an example of a looping construct?

switch

continue

break

for

29. Which keyword is used to prevent a variable from being modified?

final

const

static

extern

30. What is the range of values for a char in C?

1 to 255

-128 to 127

0 to 127

0 to 255

31. Which of the following is used to define a symbolic constant in C?

const int

constant

#define

static

32. Which of these is a decision-making structure in C?

while

scanf

printf

33. What does the keyword extern indicate?

A variable with garbage value

A variable defined elsewhere

A private variable

A local variable

34. What is a pointer?

A data type

A keyword

A compiler error

A variable that stores an address

35. What does getch() function do?

Reads a single character without echoing

Prints a character

Terminates the program

Compares characters

36. Which library must be included to use malloc()?

string.h

stdlib.h

conio.h

stdio.h

37. What is the default value of a global variable in C?

NULL

Garbage value

38. Which operator has the highest precedence?

()

39. Which keyword is used to define a structure in C?

typedef

define

object

struct

40. What is the keyword used to define a macro?

define

#define

const

macro

41. Which keyword is used to define a user-defined data type alias?

struct

typedef

alias

42. Which of the following is used to define a block of code in C?

Curly braces {}

Angle brackets

Parentheses ()

Brackets []

43. Which of the following is a valid character constant in C?

"A"

'A'

44. Which of the following function declarations is valid in C?

int = fun()

function fun()

void fun()

declare fun()

45. What is the function of return 0; in main()?

It initializes a variable

It stops the program

It returns success to the operating system

It sends 0 to the compiler

46. Which of the following is not a looping structure in C?

while

do-while

select

for

47. Which of the following is used to terminate a C program?

terminate()

end()

exit()

stop()

48. Which of the following is the correct order of evaluation?

*, /, +, -

*, +, /, -

+, -, *, /

/, *, -, +

49. Which of the following functions is used to concatenate two strings?

stradd()

strcpy()

strcat()

append()

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Mustansar KhanLast Updated: May 1, 2025

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ECAT Computer Elements of “C” Test Online

ECAT Computer Elements of “C” Test

ECAT Computer Science Chapter 19 Elements of “C” Online Test

ECAT Elements of “C” Test Online MCQs

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ECAT Computer Elements of “C” Test

ECAT Computer Science Chapter 19 Elements of “C” Online Test

ECAT Elements of “C” Test Online MCQs

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