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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.
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ECAT Elements of “C” Test Online MCQs

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

stop()

terminate()

end()

exit()

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

#define

constant

static

const int

3. What does the keyword extern indicate?

A local variable

A variable defined elsewhere

A variable with garbage value

A private variable

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

false

true

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

function myFunction()

func myFunction()

void myFunction();

def myFunction()

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

while

for

select

do-while

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

continue

for

break

switch

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

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

stdlib.h

string.h

stdio.h

math.h

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

*, +, /, -

+, -, *, /

*, /, +, -

/, *, -, +

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

static

volatile

loop

extern

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

condition ? if : else

if ? then : else

if (condition) then else

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

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

function fun()

declare fun()

void fun()

int = fun()

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

0 to 255

0 to 127

1 to 255

-128 to 127

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

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

scanf()

malloc()

printf()

exit()

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

string.h

stdio.h

stdlib.h

conio.h

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

assign()

strcopy()

copystr()

strcpy()

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

char

int

short

float

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

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

Depends on the compiler

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

macro

const

#define

define

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

object

typedef

define

struct

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

Garbage value

NULL

25. What does the keyword static do?

Allows modification

Frees memory

Preserves the value of a variable between function calls

Makes a variable global

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26. What does getch() function do?

Reads a single character without echoing

Compares characters

Prints a character

Terminates the program

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

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

Both A and B

int *p = NULL;

int p = NULL;

int *p = 0;

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

"A"

'A'

30. Which of these is a bitwise operator?

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

It returns success to the operating system

It sends 0 to the compiler

It initializes a variable

It stops the program

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

str name;

char name[20];

char name(20);

string name[20];

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

alias

struct

typedef

34. Which operator has the highest precedence?

()

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

Array

Variable

Constant

Function

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

Function

Object

Class

Interface

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

append()

stradd()

strcpy()

strcat()

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

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

/* */

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

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

strlength()

length()

strlen()

sizeof()

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

extern

static

const

final

43. Which format specifier is used for double values?

%lf

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

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

scanf

while

printf

46. What is a pointer?

A keyword

A compiler error

A data type

A variable that stores an address

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

auto

private

static

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

Curly braces {}

Brackets []

Angle brackets

Parentheses ()

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

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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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Mustansar Khan

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