You want to create a method greet_person that takes a name and returns a greeting like "Hello, Alice!". Which code correctly does this?
hard📝 Application Q15 of 15
Ruby - Methods
You want to create a method greet_person that takes a name and returns a greeting like "Hello, Alice!". Which code correctly does this?
Adef greet_person(name)
puts "Hello, #{name}!"
end
Bdef greet_person(name)
"Hello, " + name + "!"
end
Cdef greet_person(name)
return puts "Hello, " + name + "!"
end
Ddef greet_person(name)
print "Hello, " + name + "!"
end
Step-by-Step Solution
Solution:
Step 1: Understand method return vs output
To return a greeting string, the method should produce the string as its last expression or use return. Using puts or print outputs to console but returns nil.
Step 2: Analyze each option
def greet_person(name)
"Hello, " + name + "!"
end returns the greeting string correctly. def greet_person(name)
puts "Hello, #{name}!"
end prints but returns nil. def greet_person(name)
return puts "Hello, " + name + "!"
end returns nil because puts returns nil. def greet_person(name)
print "Hello, " + name + "!"
end prints but does not return the string.
Final Answer:
def greet_person(name)
"Hello, " + name + "!"
end -> Option B
Quick Check:
Return string, not print it [OK]
Quick Trick:Return string directly; puts prints but returns nil [OK]
Common Mistakes:
MISTAKES
Using puts instead of returning string
Returning result of puts (which is nil)
Confusing print with return
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