Free Printable Basics of C

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Basics of C

Total questions: 30

Worksheet time: 15mins

Name

Class

Date

What is an algorithm?

A recipe for cooking a meal.

A random guess without any steps.

A collection of data points without instructions.

An algorithm is a step-by-step procedure for solving a problem.

Which symbol is commonly used to represent a decision in a flowchart?

Circle

Triangle

Square

Diamond

Which of the following is a characteristic of structured programming?

Use of control structures like sequences, selections, and iterations.

Use of random number generation for control flow.

Emphasis on unstructured code and goto statements.

Focus on object-oriented programming principles.

What is a pseudo code?

A pseudo code is a graphical representation of data flow.

A pseudo code is a type of computer virus.

A pseudo code is a simplified, human-readable representation of an algorithm.

A pseudo code is a programming language used for software development.

In a flowchart, the start/end is shown using:

Oval or rounded rectangle

Rectangle

Diamond

Square

Structured programming promotes:

Jumping with goto

Breaking problems into modules

Writing unstructured code

All of the above

Which of the following is NOT a valid algorithm feature?

Correctness

Randomness

Efficiency

Determinism

Which of the following is a valid variable in C?

var1

var-1

1var

var@1

What is the size of int in most systems (32-bit)?

16 bytes

8 bytes

2 bytes

4 bytes

10.

Which keyword is used to declare a constant in C?

static

const

final

constant

11.

The %d format specifier is used for:

Character input

Float input

Integer input

String input

12.

Which operator is used for division in C?

13.

Which of the following is NOT a valid C data type?

integer

float

string

char

14.

What is the output of: printf("%d", 5 + 3 * 2);

15.

What is the correct way to take integer input in C?

scanf("%f", &a);

scanf("%d", &variable);

read_integer(&variable);

printf("%d", variable);

16.

Which statement is used to make a decision in C?

while

for

switch

17.

Which loop is executed at least once even if the condition is false?

foreach loop

while loop

for loop

do-while loop

18.

What is the output of this code?

int x = 5;

if (x == 5)

printf("Yes");

else

printf("No");

Yes

Error

19.

Which control statement is used to exit from a loop?

continue

return

break

skip

20.

The switch statement can be used with in C:

int

char

both (int, char)

string

21.

The syntax of a `for` loop is in C:

for(condition; initialization; increment/decrement) { // code to execute }

for(initialization; condition; increment/decrement) { // code to execute }

for(initialization; increment/decrement; condition) { // code to execute }

for(initialization; condition) { // code to execute }

22.

Which loop is best when the number of iterations is known?

for loop

foreach loop

do-while loop

while loop

23.

A function in C must be

define

declare

called

all of these

24.

What is recursion?

Recursion is a technique for optimizing code performance.

Recursion is a method of data storage in programming.

Recursion is a way to iterate through a list of items.

Recursion is a method where a function solves a problem by calling itself.

25.

Which keyword is used to define a function?

function

define

void/int/char

method

26.

What is the default return type of a C function if not specified?

void

float

int

char

27.

Call by value means:

Passing address of variable

Passing copy of value

Passing pointers

Using global variables

28.

Call by reference can be done using:

Arrays

functions

Pointers

Loops

29.

Which function is used to return a value in C?

return

display

output

30.

Scope rules define:

Data types of variables

Where a variable is accessible

Return type of functions

Size of the program

100 %

Basics of C

Total questions: 30

Worksheet time: 15mins

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