From: ts <decoux@...>
Date: 2002-11-09T20:31:10+09:00
Subject: Re: Can I run other program in Ruby program and get result?

>>>>> "S" == Sheen Zan <zx@is.pku.edu.cn> writes:

S> I write a hello world program using c++, which output "Hello world!",
S> I compile it into hello.o. Now, I want to write a Ruby program, which can run 
S> hello.o in it and catch the output "Hello world!". What am I use in Ruby
S> to do this? 

 Well, if you want to call an external program you can use ``

igeon% cat a.c
#include <stdio.h>
main()
{
   printf("Hello world !\n");
}
pigeon% 

pigeon% cc a.c
pigeon% 

pigeon% cat b.rb
#!/usr/bin/ruby
res = `a.out`
puts "result : #{res}"

pigeon% 

pigeon% b.rb
result : Hello world !
pigeon% 



Guy Decoux