Puts, print, and p output differences in Ruby - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output difference between puts and print

What is the output of this Ruby code snippet?

Ruby

puts "Hello"
print "World"

A Hello\nWorld

B HelloWorld\n

C "Hello"\n"World"

D Hello\nWorld\n

💡 Hint

Remember that puts adds a newline after output, print does not.

puts prints the string and adds a newline. print prints without adding a newline. So the output is Hello with a newline, then World immediately after.

❓ Predict Output

intermediate

Output difference between p and puts

What is the output of this Ruby code snippet?

Ruby

p "Hello"
puts "Hello"

A "Hello"\nHello

B "Hello"\n"Hello"

C Hello\nHello

D Hello\n"Hello"

💡 Hint

p shows the inspected version of the object, puts prints the string as is.

p prints the inspected version of the string, which includes quotes. puts prints the string without quotes and adds a newline.

❓ Predict Output

advanced

Output of p with an array vs puts with an array

What is the output of this Ruby code snippet?

Ruby

p [1, 2, 3]
puts [1, 2, 3]

A 1\n2\n3\n[1, 2, 3]

B [1, 2, 3]\n[1, 2, 3]

C [1, 2, 3]\n1\n2\n3

D 1 2 3\n[1, 2, 3]

💡 Hint

p prints the inspected array, puts prints each element on its own line.

p prints the array as it is, showing brackets and commas. puts prints each element of the array on a separate line.

🧠 Conceptual

advanced

Behavior difference of puts, print, and p with nil

Which statement correctly describes the output when printing nil with puts, print, and p in Ruby?

A puts prints "nil", print prints nothing, p prints nothing

B puts prints a blank line, print prints nothing, p prints "nil"

C puts prints nothing, print prints a blank line, p prints "nil"

D puts prints "nil", print prints "nil", p prints a blank line

💡 Hint

Think about how each method handles nil values and output.

puts nil prints a blank line because it converts nil to an empty string. print nil prints nothing. p nil prints the string "nil" because it shows the inspected value.

🔧 Debug

expert

Why does print not add a newline but puts does?

Consider this Ruby code: print "Hello" print "World" puts "Hello" puts "World" What is the output and why does print behave differently from puts?

A Hello\nWorldHelloWorld because print adds newline only after first call

B Hello\nWorld\nHelloWorld because print adds newline, puts does not

C HelloWorld\nHelloWorld because both print and puts add newline

D HelloWorldHello\nWorld\n because print outputs exactly what is given without newline, puts adds newline after output

💡 Hint

Think about how print and puts handle newlines differently.

print outputs text exactly as given, no newline added. puts outputs text and adds a newline after each call. So the first two print calls produce "HelloWorld" with no newline, then puts adds newlines after each string.