I am newbie in c++ boost , I having a program trying to compile it
#include "Program.h" #include <boost/asio/io_service.hpp> #include <boost/asio/streambuf.hpp> #include <boost/asio/ip/address.hpp> #include <boost/asio/ip/udp.hpp> namespace ConsoleApp { void Main(std::wstring& args[]) { . . } } the error appear is
Program.cpp:11:31: error: declaration of ‘args’ as array of references void Main(std::wstring& args[]) anyone here can help me , is this code error ? thanks
The error is pretty much saying everything. std::wstring& args[] is array ([]) of wstring (std::wstring) references (&). You cannot have array of references - see Why are arrays of references illegal?.
Note: you're coding in C++, main function should be following:
int main(int argc, char *argv[]) { // Your code return 0; } EDIT:
And AFAIK main function cannot be in any namespace.
Also, there is one more problem with your code - even if we could create array of references, there is not stored information about length of the array. You couldn't use it except first element!
Anyway, you can do following (replaced wstring with string because I'm lazy):
#include <vector> #include <string> namespace ConsoleApp { void Main(std::vector<std::string> &args) { } } int main(int argc, char *argv[]) { std::vector<std::string> args; args.resize(argc); for(int i = 0; i < argc; ++i) { args[i] = argv[i]; } ConsoleApp::Main(args); return 0; } 
int main()" and briefly posted a comment about it — but actually, it is a function Main() in a namespace and not the int main() where program execution starts, so it is not subject to those rules. (I rapidly removed my comment.)