How to ask for numerica input

[Fred Ige]

I am trying to make a simple temperature converter, and I want to ask
for F temperature (numerical value)

what command do I use?

 

[David A. Black]

Hi --

I am trying to make a simple temperature converter, and I want to ask
for F temperature (numerical value)

what command do I use?

The bread-and-butter way to get keyboard input is with gets:

print "Enter a number: "
line = gets

and then, since line is a string:

num = line.to_i

You can get fancier with error-checking, etc., but that's the basic
idea.


David

 

[Bertram Scharpf]

Hi,

Am Freitag, 25. Sep 2009, 11:12:37 +0900 schrieb David A. Black:

print "Enter a number: "
line = gets
num = line.to_i

You can get fancier with error-checking, etc., but that's the basic
idea.

This does the error checking:

num = Integer line

Bertram