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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 a valid character constant in C?

"A"

'A'

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

terminate()

stop()

exit()

end()

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

extern

loop

volatile

static

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

5. What does getch() function do?

Reads a single character without echoing

Terminates the program

Compares characters

Prints a character

6. What is a pointer?

A compiler error

A keyword

A data type

A variable that stores an address

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

macro

const

define

#define

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

strcpy()

strcopy()

assign()

copystr()

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

float

char

short

int

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

stradd()

strcpy()

strcat()

append()

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

It stops the program

It returns success to the operating system

It initializes a variable

It sends 0 to the compiler

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

final

static

extern

const

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

NULL

Garbage value

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

Both A and B

int *p = 0;

int *p = NULL;

int p = NULL;

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

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

*, +, /, -

*, /, +, -

/, *, -, +

+, -, *, /

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

Depends on the compiler

18. Which format specifier is used for double values?

%lf

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

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

if (condition) then else

condition ? if : else

if ? then : else

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

strlen()

strlength()

sizeof()

length()

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

constant

static

#define

const int

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

function myFunction()

def myFunction()

func myFunction()

void myFunction();

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

Object

Function

Interface

Class

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

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

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

continue

for

switch

break

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

false

true

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

while

printf

scanf

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

-128 to 127

0 to 255

0 to 127

1 to 255

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

Curly braces {}

Parentheses ()

Angle brackets

Brackets []

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

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

33. What does the keyword extern indicate?

A variable with garbage value

A local variable

A variable defined elsewhere

A private variable

34. Which of these is a bitwise operator?

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

scanf()

malloc()

printf()

exit()

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

define

typedef

object

struct

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

alias

struct

typedef

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

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

math.h

string.h

stdlib.h

stdio.h

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

stdlib.h

stdio.h

conio.h

string.h

41. Which operator has the highest precedence?

()

42. What does the keyword static do?

Allows modification

Makes a variable global

Frees memory

Preserves the value of a variable between function calls

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

Constant

Variable

Array

Function

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

for

while

do-while

select

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

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

auto

static

private

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

/* */

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

function fun()

void fun()

int = fun()

declare fun()

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

string name[20];

char name[20];

char name(20);

str name;

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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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