String formatting (sprintf) in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to format the number 10 as a string using sprintf.

MATLAB

str = sprintf([1], 10);

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

A'%d'

B'%s'

C'10'

D'%f'

Attempts:

3 left

💡 Hint

Common Mistakes

Using '%s' which is for strings, not numbers.

Putting the number directly as a string instead of using a format specifier.

The '%d' format specifier tells sprintf to format the number as an integer.

2fill in blank

medium

Complete the code to format the number 3.14159 with two decimal places using sprintf.

MATLAB

str = sprintf([1], 3.14159);

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

A'%s'

B'%.2f'

C'%d'

D'%e'

Attempts:

3 left

💡 Hint

Common Mistakes

Using '%d' which formats as integer and loses decimals.

Using '%e' which formats in exponential notation.

The '%.2f' format specifier formats the number as a floating-point with 2 decimal places.

3fill in blank

hard

Fix the error in the code to correctly format the string with a name and age.

MATLAB

str = sprintf('Name: %s, Age: [1]', 'Alice', 30);

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

A%d

B%s

C%f

D%c

Attempts:

3 left

💡 Hint

Common Mistakes

Using '%s' which expects a string, causing a mismatch.

Using '%f' which formats floating-point numbers.

The '%d' specifier is used to format the integer age correctly.

4fill in blank

hard

Fill both blanks to format a floating number with 3 decimals and a string.

MATLAB

str = sprintf('Value: [1], Status: [2]', 12.34567, 'OK');

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

A%.3f

B%d

C%s

D%e

Attempts:

3 left

💡 Hint

Common Mistakes

Using '%d' for the floating number, which truncates decimals.

Using '%f' without precision, showing too many decimals.

'%.3f' formats the number with 3 decimals, and '%s' formats the string.

5fill in blank

hard

Fill all three blanks to format a string with a name, integer age, and floating-point score with 1 decimal.

MATLAB

str = sprintf('Name: [1], Age: [2], Score: [3]', 'Bob', 25, 88.765);

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

A%s

B%d

C%.1f

D%f

Attempts:

3 left

💡 Hint

Common Mistakes

Using '%f' without precision for the score.

Using '%s' for the age, causing type mismatch.

'%s' formats the name string, '%d' formats the integer age, and '%.1f' formats the score with one decimal place.