Variable declaration and initialization - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an integer variable named age.

C

int [1];

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

Afloat

B5

Cage

Dmain

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number instead of a variable name.

Using a data type where the variable name should be.

The code declares an integer variable named age using int age;.

2fill in blank

medium

Complete the code to initialize the integer variable count with the value 10.

C

int count = [1];

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

A10

Bcount

C"10"

Dten

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the number inside quotes, which makes it a string.

Using the variable name instead of a value.

The variable count is initialized with the integer value 10.

3fill in blank

hard

Fix the error in the code to declare a floating-point variable named price.

C

[1] price;

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

Afloat

Binteger

Cdoublee

Dchar

Attempts:

3 left

💡 Hint

Common Mistakes

Misspelling the data type.

Using an integer type for decimal numbers.

The correct data type for a floating-point number is float.

4fill in blank

hard

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

C

char [1] = [2];

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

Agrade

B'A'

C"A"

Dchar

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes which makes it a string.

Using the data type as the variable name.

The variable grade is declared as char and initialized with the character 'A' using single quotes.

5fill in blank

hard

Fill both blanks to declare and initialize a string variable named name with the value "John".

C

char [1][] = [2];

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

Aname

B"John"

C'John'

Dstring

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes which is for single characters.

Using string as a data type which is not standard in C.

In C, strings are arrays of characters. We declare char name[] and initialize it with the string "John" using double quotes.