Quiz: Basics of C++ Quiz


Basics of C++ QuizOnline version Test your C++ basics by MAHENDRASINH HETRAJ 1 Which statement prints Hello World to the console in C++? a cout << Hello World; b System.out.println("Hello World"); c std::cout << "Hello World"; d printf("Hello World"); 2 Which data type best fits storing whole numbers without decimals? a double b float c int d char 3 Which loop guarantees at least one execution of the body? a repeat b while c for d do-while 4 What is the purpose of header files like #include ? a to style the program b to run the program without compiling c to generate executables d to bring in library declarations and symbols 5 Which operator is used for logical AND in C++? a * b & c && d \|\| 6 Which function serves as the program entry point in C++? a main b start c run d init 7 What does the keyword const mean when applied to a variable? a The variable is dynamic b The variable cannot be modified c The variable is global d The variable is uninitialized 8 Which STL container stores elements contiguously in memory? a vector b set c list d unordered_map 9 How do you declare an array of 5 integers in C++? a int arr(5); b array arr[5]; c int arr[5]; d int[5] arr; 10 Which qualifier is used for member functions that do not modify the object? a static b const c mutable d volatile Feedback 1 std::cout is the C++ stream for console output; the other options are not valid C++ for this task. 2 int is used for whole numbers; float/double store decimals, and char stores single characters. 3 A do-while loop runs the body once before evaluating the condition. 4 Header files declare functions, classes, and objects from libraries used by the program. 5 && evaluates to true only if both operands are true. 6 The function int main() is the starting point of a C++ program. 7 const makes the value read-only after initialization. 8 Vectors store elements in a contiguous memory block, unlike list/set. 9 C-style arrays use the type name followed by the name and size in brackets. 10 Adding const after the parameter list makes a member function promise not to modify the object.

1

Which statement prints Hello World to the console in C++?

a

cout << Hello World;

b

System.out.println("Hello World");

c

std::cout << "Hello World";

d

printf("Hello World");

2

Which data type best fits storing whole numbers without decimals?

a

double

b

float

c

int

d

char

3

Which loop guarantees at least one execution of the body?

a

repeat

b

while

c

for

d

do-while

4

What is the purpose of header files like #include ?

a

to style the program

b

to run the program without compiling

c

to generate executables

d

to bring in library declarations and symbols

5

Which operator is used for logical AND in C++?

a

*

b

&

c

&&

d

||

6

Which function serves as the program entry point in C++?

a

main

b

start

c

run

d

init

7

What does the keyword const mean when applied to a variable?

a

The variable is dynamic

b

The variable cannot be modified

c

The variable is global

d

The variable is uninitialized

8

Which STL container stores elements contiguously in memory?

a

vector

b

set

c

list

d

unordered_map

9

How do you declare an array of 5 integers in C++?

a

int arr(5);

b

array arr[5];

c

int arr[5];

d

int[5] arr;

10

Which qualifier is used for member functions that do not modify the object?

a

static

b

const

c

mutable

d

volatile

Feedback

1

std::cout is the C++ stream for console output; the other options are not valid C++ for this task.

2

int is used for whole numbers; float/double store decimals, and char stores single characters.

3

A do-while loop runs the body once before evaluating the condition.

4

Header files declare functions, classes, and objects from libraries used by the program.

5

&& evaluates to true only if both operands are true.

6

The function int main() is the starting point of a C++ program.

7

const makes the value read-only after initialization.

8

Vectors store elements in a contiguous memory block, unlike list/set.

9

C-style arrays use the type name followed by the name and size in brackets.

10

Adding const after the parameter list makes a member function promise not to modify the object.

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Basics of C++ Quiz

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Basics of C++ QuizOnline version

by MAHENDRASINH HETRAJ

Which statement prints Hello World to the console in C++?

Which data type best fits storing whole numbers without decimals?

Which loop guarantees at least one execution of the body?

What is the purpose of header files like #include ?

Which operator is used for logical AND in C++?

Which function serves as the program entry point in C++?

What does the keyword const mean when applied to a variable?

Which STL container stores elements contiguously in memory?

How do you declare an array of 5 integers in C++?

Which qualifier is used for member functions that do not modify the object?

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