Re: [Boost-users] Simple example program builds but hangs when I run it. (Ubuntu).

Subject: Re: [Boost-users] Simple example program builds but hangs when I run it. (Ubuntu).
From: Larry Evans (cppljevans_at_[hidden])
Date: 2012-01-24 07:28:14

On 01/23/12 17:43, vincegata wrote:
> Hello,
> 
> I run Ubuntu 11.04. I downloaded Boost 1.48.0, then I followed the
> instructions from Getting Started on Unix variants to build the
> libraries into /usr/local/include and /usr/local/lib. Now, I build the
> Simple example program without any errors, however
> when I run the program it just hangs indefinitely on  std::for_each() line.
> 
> Could someone help me with this please?
> 
> 
> $: g++ -g -lboost_filesystem main.cpp 
> 
> #include <boost/lambda/lambda.hpp>
> #include <iostream>
> #include <iterator>
> #include <algorithm>
> 
> int main()
> {
>     using namespace boost::lambda;
>     typedef std::istream_iterator<int> in;
> 
>     std::for_each(in(std::cin), in(), std::cout << (_1 * 3) << " " );
>     int stop = 1;
> }
> 
> 
What's in std::cin?
What output do you expect to see?

-regards,
Larry