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

Posted by John Schaub
John Schaub
5,167 Points

Please check my answer.

I'm not sure where I'm going wrong here.

The method below checks the speed of a car and returns a string value: either "safe" or "unsafe". Return "safe" if: The car_speed passed in as an argument is greater than or equal to the number 40. The car_speed passed in as an argument is less than or equal to the number 50. Otherwise, return "unsafe". Hint: You should use the && logical operator to accomplish this task. :)

ruby.rb 
def check_speed(car_speed)
  # write your code here
  if (car_speed >==40) && (car_speed <== 50)
    puts "safe"
  elsif (car_speed >50)
    puts "unsafe"
end

2 Answers

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

There're some syntactical & logical issues in your codes there.

  • The use of puts instead of return
  • >== and <== are illegal symbols in Ruby
  • first condition is ok asides from the comparison symbols, however, it should've been followed by the else clause instead of another elsif.
  • no closing end keyword for the conditional statement.

So the corrected version of your code is sth like this

def check_speed(car_speed)
  # write your code here
  if (car_speed >= 40) && (car_speed <= 50)
    return "safe"
  else
    return "unsafe"
  end
end

Hope it helps.

John Schaub
John Schaub
5,167 Points

William,

Thank you for your input. I see where I was taking this. I was reading into the question.

Emil Nastase
Emil Nastase
4,396 Points
Emil Nastase
Emil Nastase
4,396 Points

You just save my night William Li ... Thanks