For (i=0;i>....) in Ruby?

ruby-talk
1

Hello,

how do i write this C++ source code in ruby:

cout<<"Enter field length: ";

Field;

for(i=0;i<Max;i++)
{
cout<<“Insert “<<i<<”. Number:”;

Field[i];
}

I hope it´s correct. The programme should do the following:

  1. How many numbers do you wanna have?
  2. Please enter number 1… 2… 3… etc. till the end.
···

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2

stefanocheri@freenet.de wrote:

Hello,

how do i write this C++ source code in ruby:

By putting some effort in to learning how to use Ruby.

Grab a copy of Programming Ruby from http://www.rubycentral.com

Rob

3

Hi –

Hello,

how do i write this C++ source code in ruby:

cout<<"Enter field length: ";

Field;

for(i=0;i<Max;i++)
{
cout<<“Insert “<<i<<”. Number:”;

Field[i];
}

I hope it´s correct. The programme should do the following:

  1. How many numbers do you wanna have?
  2. Please enter number 1… 2… 3… etc. till the end.

Something like:

print "Enter field length: "
len = gets.chomp.to_i

fields =
len.times do |i|
print "Please enter number #{i+i}: "
fields << gets.to_i
end

or if you want that nice functional programming feel:

fields = (0…len).map do |i|
print "Please enter number #{i}: "
gets.to_i
end

David

···

On Wed, 11 Dec 2002 stefanocheri@freenet.de wrote:

–
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web: http://pirate.shu.edu/~blackdav

4

stefanocheri@freenet.de wrote:

Hello,

how do i write this C++ source code in ruby:

cout<<"Enter field length: ";

Field;

puts “Enter field length”
max = gets # vars starting with capital letters are constants
# plus, you want to input Max, not Field in your C++ code
# anyway

for(i=0;i<Max;i++)
{
cout<<“Insert “<<i<<”. Number:”;

Field[i];
}

field = # or field = Array.new
0.upto(max) {|i|
print "Insert #{i}. Number: " # puts adds a newline; print does not
field[i] = gets # arrays can be grown dynamically
}

martin