Re: confusion with gets, if

In ruby, gets() will read a line, which generally includes a newline =
character.

the first thing you could do to detect this on your own is write a =
"debugging line" just after the input =3D gets() line to see what =
"input" is set to

thus:

input =3D gets()
puts input.inspect

Then when you run your program, it'll show you what input is, and =
therefore you'll see why your ifs aren't working.

But yeah, you're using integers sometimes, strings other things... and =
if you want to get rid of the newline, change your input line to this:

input =3D gets.chomp

Julian

On 12/04/2013, at 1:16 AM, Daniel ferrando <[e-mail]> wrote:

> hi I'm new to ruby and im trying to write some simple codes but i cant
> get the 'if's to work. below what i mean. how can i fix the ruby code
> for the ifs to work?
>=20
> no matter what i write it always returns "invalid input"
> ##################Code#########################
> while counter < 1 do
>  print ("put 10, 20 or 30 ")
>  input =3D gets()
>  if input =3D=3D '10'
>    person1 +=3D 1
>    counter +=3D 1
>  elsif input =3D=3D 20
>    person2 +=3D 1
>    counter +=3D 1
>  elsif input =3D=3D 30
>    person3 +=3D 1
>    counter +=3D 1
>  else
>    puts("Invalid input")
>  end
>=20
>=20
> end
> ##############################################
>=20
>=20
>=20
> if i were to write it in python i would do it somewhat like this:
>=20
> ##################Code#########################
> while counter < 5 :
>=20
>    vector.append(input('put 10, 20 or 30 '))
>=20
>    if vector [counter] =3D=3D '10' :
>        p1 +=3D 1
>        counter +=3D 1
>    elif vector [counter] =3D=3D '20':
>        p2 +=3D 1
>        counter +=3D1
>    elif vector [counter] =3D=3D '30':
>        p3 +=3D 1
>        counter +=3D 1
>    else:
>        print ("invalid input")
>=20
> ##############################################
>=20
>=20
> last question whats the difference between ruby and ruby on rails?
>=20
> --=20
> Posted via http://www.ruby-forum.com/.
>=20