String formatting with sprintf in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to format the number 5 as a string using sprintf.

R Programming

result <- sprintf([1], 5)

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

A"%d"

B"%f"

C"%s"

D"%x"

Attempts:

3 left

💡 Hint

Common Mistakes

Using "%f" formats as floating point with decimals.

Using "%s" expects a string input, not a number.

Using "%x" formats as hexadecimal.

The "%d" format specifier formats the number as an integer string.

2fill in blank

medium

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

R Programming

result <- sprintf([1], 3.14159)

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

A"%.2f"

B"%.0f"

C"%.3f"

D"%d"

Attempts:

3 left

💡 Hint

Common Mistakes

Using "%d" truncates the number to integer.

Using "%.0f" rounds to zero decimals.

Using "%.3f" keeps three decimals, not two.

The "%.2f" format specifier formats the number with two decimal places.

3fill in blank

hard

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

R Programming

result <- sprintf("Name: %s, Age: [1]", "Alice", 30)

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

A"%c"

B"%f"

C"%s"

D"%d"

Attempts:

3 left

💡 Hint

Common Mistakes

Using "%s" for age causes type mismatch.

Using "%f" formats as floating point.

Using "%c" expects a single character.

The "%d" format specifier is used to format integers like age.

4fill in blank

hard

Fill both blanks to format a floating number with width 8 and 3 decimals using sprintf.

R Programming

result <- sprintf([1], [2])

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

A"%8.3f"

B3.14159

C8.12345

D"%6.2f"

Attempts:

3 left

💡 Hint

Common Mistakes

Using "%6.2f" formats with wrong width and decimals.

Passing a string instead of a number as second argument.

Mixing up width and precision in format.

The format "%8.3f" sets width 8 and 3 decimals; 3.14159 is the number to format.

5fill in blank

hard

Fill all three blanks to format a string with a name left-aligned in width 10 and an integer score padded with zeros to width 4.

R Programming

result <- sprintf([1], [2], [3])

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

A"%-10s %04d"

B"%04d"

C"Alice"

D42

Attempts:

3 left

💡 Hint

Common Mistakes

Using "%10s" right-aligns the string.

Using "%d" does not pad zeros.

Passing numbers as strings causes errors.

Use "%-10s %04d" for left-aligned name width 10 and zero-padded score width 4, "Alice" as name, 42 as score.