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Ruby Ruby Operators and Control Structures Logical Operators The And (&&) Operator

Posted by Jeremy Biron
Jeremy Biron
Courses Plus Student 4,135 Points

Ruby Multiple Conditions - Stage 3 Challenge 1

I cannot figure out the answer to this question. Please help... :-)

Challenge Task 1 of 1

Set the return value of the "check_speed" method to the string "safe" depending on the following condition: The speed passed in as an argument is at least 40. The speed passed in as an argument is less than or equal to 50. You should use the "&&" logical operator to accomplish this task.

ruby.rb 
def check_speed(car_speed)
  if (car_speed > 40) && (car_speed <= 50)
    return "safe"
  else
    return "unsafe"
  end
end

check_speed(45)
Jeremy Biron
Jeremy Biron
Courses Plus Student 4,135 Points

Forgot to include the "bummer" message.

Bummer! The check_speed method isn't producing the correct output.

4 Answers

Charles Smith
Charles Smith
7,575 Points
Charles Smith
Charles Smith
7,575 Points

Sorry you don't need the parenthesis. The problem is that It must check if it's >=40

You also don't need to call the function.

Jeremy Biron
Jeremy Biron
Courses Plus Student 4,135 Points

Ok >= 40 solved the problem. I missed the part "at least" which should include 40. Thanks Charles!

Emilio Liriano
Emilio Liriano
11,090 Points
Emilio Liriano
Emilio Liriano
11,090 Points

So you need to remove the first parentheses and make sure you close both the if statement and the define method. Here's how I solved it.

def check_speed(car_speed)
  if car_speed >= 40 && car_speed <= 50
    return "safe"
  end
end
Charles Smith
Charles Smith
7,575 Points
Charles Smith
Charles Smith
7,575 Points

I think you need to wrap both conditions in parentheses. 

if ( (car_speed > 40) && (car_speed <= 50) )
Jeremy Biron
PLUS
Jeremy Biron
Courses Plus Student 4,135 Points
Jeremy Biron
Jeremy Biron
Courses Plus Student 4,135 Points

Thanks for the advice. Unfortunately it still isn't working. Here is another option I tried.

def check_speed(car_speed)
  if ((car_speed > 40) && (car_speed <= 50))
    return "safe"
  end
end

check_speed = check_speed(45)