Programming Skills – NAT

Programming Skills - NAT (National Aptitude Test)

Programming Skills refers to the Computer Science portion of the National Aptitude Test (NAT), a standardised test for admissions in Pakistan.

1 / 50

Which of these is a Boolean data type?

Can hold values like true and false.

Can hold decimal numbers.

Can hold whole numbers.

Can hold a single character.

2 / 50

In a `switch` statement, which keyword is used to terminate a case?

exit

stop

break

end

3 / 50

Which of the following is a logical operator?

4 / 50

What will this loop print? `for(int i=0; i<3; i++) { printf("%d ", i); }`

1 2

0 1 2

1 2 3

0 1 2 3

5 / 50

What is the primary purpose of a variable in programming?

To store and manipulate data

To perform mathematical calculations

To define functions

To create loops

6 / 50

Which data type is used to store decimal numbers like 3.14?

char

int

double or float

bool

7 / 50

Which loop is best used when the number of iterations is unknown beforehand?

for loop

while loop

Both B and C

do-while loop

8 / 50

What does the `++` operator do?

Increases the value of a variable by 1.

Compares two values for equality.

Adds 2 to a variable.

Multiplies a variable by itself.

9 / 50

Which symbol is commonly used in pseudocode to represent an output operation?

INPUT

OUTPUT or PRINT

SET

10 / 50

What is the main advantage of using a function in a program?

It increases the memory usage.

It reduces code redundancy and improves reusability.

It makes the program run faster.

It automatically fixes logical errors.

11 / 50

A flowchart symbol shaped as a parallelogram typically represents:

The start or end

An input/output operation

A process

A decision

12 / 50

Which of the following is a valid function call for a function defined as `void display()`?

display();

void display();

display;

int x = display();

13 / 50

What is the final value of `x` after this code executes? `int x = 5; x = x + 2;`

14 / 50

What is the purpose of an `if` statement?

To make a decision based on a condition.

To declare a variable.

To define a function.

To repeat a block of code.

15 / 50

What does the following code do? `while(condition) { // code }`

Executes the code a fixed number of times.

Executes the code only if the condition is false.

Repeatedly executes the code as long as the condition is true

Executes the code exactly once.

16 / 50

What is the primary characteristic of the Bubble Sort algorithm?

It swaps adjacent elements if they are in the wrong order.

It selects the minimum element and swaps it with the first.

It uses a pivot element to partition the array.

It divides the array into halves.

17 / 50

**Which operator has the highest precedence in the expression `5 + 3 * 2`?**

= (Assignment)

* (Multiplication)

() (Parentheses)

+ (Addition)

18 / 50

If `a` is 10 and `b` is 3, what is the value of `a % b`?

19 / 50

The `printf` function in C is used for?

Displaying output on the screen.

Getting input from the user

Performing calculations.

Defining a new function

20 / 50

Which of the following is a comparison operator?

21 / 50

Which of the following is a syntactically correct variable name?

int

1stNumber

total_score

my variable

22 / 50

The process of combining two strings is called?

Adding

Concatenation

Linking

Merging

23 / 50

Which keyword is used to define a constant value that cannot be changed?

const or final

fixed

variable

static

24 / 50

What is the main purpose of an algorithm?

To declare variables.

To write code in a specific programming language.

To draw a flowchart.

To provide a step-by-step procedure for solving a problem.

25 / 50

What is the purpose of comments in source code?

To instruct the compiler to ignore syntax errors.

To declare constants.

To explain the code and make it more readable for programmers.

To increase the execution speed of the program.

26 / 50

Which protocol is primarily used for securely transferring web pages over the internet?

HTTPS

FTP

SMTP

HTTP

27 / 50

Which searching algorithm requires the list to be sorted for it to work?

Binary Search

Linear Search

Sequential Search

Bubble Search

28 / 50

Which of the following best describes an algorithm?

The final output of a program

A set of rules to solve a problem in a finite number of steps

A type of computer hardware

A programming language

29 / 50

In an array, all elements must be of the same?

Size

Index

Data Type

Value

30 / 50

In a `do-while` loop, the condition is checked?

In the middle of the loop.

At the beginning of the loop.

At the end of the loop.

It is not checked at all.

31 / 50

The expression `!(5 > 3)` evaluates to:

True

False

32 / 50

What is the value of `arr[2]` after the code `int arr[] = {10, 20, 30, 40};` is executed?

33 / 50

What is the term for a variable that is declared inside a function?

External Variable

Global Variable

Constant Variable

Local Variable

34 / 50

What is the role of a compiler?

To design the user interface for the program.

To find and fix logical errors in the code.

To translate high-level code into machine code all at once.

To execute the program line by line.

35 / 50

In programming, a sequence of characters is called a?

Character

Text

Word

String

36 / 50

What is the primary goal of a sorting algorithm?

To search for an element in a list.

To combine two lists into one.

To reduce the memory used by an array.

To arrange the elements of a list in a specific order (ascending/descending).

37 / 50

Which of the following is the correct way to write an assignment statement?

x == 5;

x : 5;

x -> 5;

x = 5;

38 / 50

The process of finding and fixing errors in a program is called?

Compiling

Interpreting

Debugging

Executing

39 / 50

What is the result of the expression `15 / 4` in integer division?

40 / 50

Which data type is most suitable for storing a single character like 'A'?

int

char

float

string

41 / 50

How many times will the body of this loop execute? `for(int i=5; i>0; i--) { }`

Infinite times

6 times

5 times

4 times

42 / 50

What is the value of `result`? `int result = (10 == 10);`

True

43 / 50

Which control structure is used to execute a block of code a specific number of times?

for loop

while loop

switch statement

if-else statement

44 / 50

A function is defined as `int calculate(int a, int b)`. What does the `int` before `calculate` signify?

The function has internal integer variables.

The function takes integer inputs.

The function returns an integer value.

The function name is an integer.

45 / 50

Which part of a function is known as its signature?

The return statement

The code inside the curly braces {}

The comment above the function

The function's name and its parameter list

46 / 50

In pseudocode, the statement `SET count = 0` is equivalent to?

input count

while count < 0

count = 0; in a programming language.

if count == 0

47 / 50

What is the purpose of the `else` part in an `if-else` statement?

To check another condition.

To execute code only if the if condition is true.

To terminate the program.

To execute code only if the if condition is false.

48 / 50

In an array `int scores[5];`, what is the index of the first element?

49 / 50

Which of the following is a key step in the Linear Search algorithm?

Check each element in the list one by one.

Repeatedly swap adjacent elements.

Divide the list into smaller sub-lists.

Compare the target value with the middle element.

50 / 50

In a flowchart, what shape is used to represent a decision?

Diamond

Oval

Rectangle

Parallelogram

Your score is

The average score is 62%