[Boost-users] please help : Error: Unexpected type name

HI all, when I try to compile the example code only use boost head-file in SunOS :

#include #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) << " " ); }

I get many errors like 'Unexpected type name', the first one is :

CC -g -I../. -c -o main.o main.C ".././boost/lambda/detail/function_adaptors.hpp", line 203: Error: Unexpected type name "boost::lambda::Arg1" encountered.

could someone give a hand.

sun