Re: [Boost-users] can't get first example in boost tutorial to work

From: Jens Seidel (jensseidel_at_[hidden])
Date: 2008-04-20 16:01:43

On Sun, Apr 20, 2008 at 07:49:28PM +0000, 7stud wrote:
> And when I try running the program in the Xcode 2.4 IDE, I get different
>  errors.  I added the directory /usr/local/boost_1_34_1 to the 
> Project Settings under: 
> 
> Project>Edit Project Settings 
> Collection: Search Paths
> Header Search Paths /usr/local/boost_1_34_1/**
> 
> And when I run the program, I get an error for the line:
> 
> typedef std::istream_iterator<int> in;
> 
> which says:
> 
> error: expected initializer before token '<' token

It works for me. Please check that you use indeed a C++ compiler not a C
one. Maybe adding (after all other #include-statements in the example)
#include <iterator>
helps to make this error go away?

> And I get an error for the line:
> 
> std::for_each(in(std::cin), in(), std::cout << (_1 * 3) << " " );
> 
> which says:
> 
> error: for_each is not a member of 'std'

for_each is defined in algorithm which is included ...

Try:

#include <iostream>

int main()
{
        std::cout << "Hello World. This is my first C++ program\n";
        return 0;
}

Jens