Built-in data types in C++ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an integer variable named age.

C++

int [1] = 25;

Drag options to blanks, or click blank then click option'

Aage

Bvalue

Cnumber

Dcount

Attempts:

3 left

💡 Hint

Common Mistakes

Using a keyword as a variable name.

Forgetting to declare the variable type.

The keyword int declares an integer variable. Here, age is the variable name.

2fill in blank

medium

Complete the code to declare a floating-point variable named price with value 19.99.

C++

float [1] = 19.99f;

Drag options to blanks, or click blank then click option'

Avalue

Bcost

Camount

Dprice

Attempts:

3 left

💡 Hint

Common Mistakes

Using an integer type for decimal numbers.

Missing the f suffix for float literals.

The float type stores decimal numbers. The variable name price matches the context.

3fill in blank

hard

Fix the error in the code by choosing the correct data type for the variable isOpen.

C++

[1] isOpen = true;

Drag options to blanks, or click blank then click option'

Ainteger

Bstring

Cbool

Dfloat

Attempts:

3 left

💡 Hint

Common Mistakes

Using string or float for boolean values.

Using integer which is not a valid C++ type.

The bool type stores true or false values. Here, isOpen should be declared as bool.

4fill in blank

hard

Fill both blanks to declare a character variable named grade with value 'A'.

C++

char [1] = [2];

Drag options to blanks, or click blank then click option'

Agrade

B'A'

C"A"

Dletter

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes for characters (which makes it a string).

Using an incorrect variable name.

The char type stores a single character. The variable name is grade and the value must be a character literal 'A'.

5fill in blank

hard

Fill both blanks to declare a double variable named distance with value 123.456.

C++

double [1] = [2];

Drag options to blanks, or click blank then click option'

Adistance

B123.456

C123.456f

Dlength

Attempts:

3 left

💡 Hint

Common Mistakes

Using float suffix f with double type.

Using an unrelated variable name.

The double type stores decimal numbers with double precision. The variable name is distance and the value is 123.456 (without f suffix).