Question

I get an error for the line number 6. I try to print a global variable which the ruby interpreter doesn’t recognize. why is that ? How can i modify this ?

localVar = "Local Variable"
$globalVar = "Global Variable"
puts(localVar)
def func
puts("From the function func")
puts(globalVar) #line 6
end

def changer
globalVar = "New Global Var"
puts("New Global Var : #{globalVar}")
end
func #Call the function func
changer #Call the function changer

Output :

Local Variable
From the function func
global.rb:6:in `func': undefined local variable or method `globalVar' for main:Object (NameError)
    from global.rb:13:in `<main>'

Answer 1

You need to put the $ every time in front of the variable name.

puts($globalVar) #line 6