Thread: argc, **argv in C++.

Hello,
I'm coding a program which I want to communicate with user while calling it. And is it neat to use int main(int argc, char *argv[]) in C++? Or maybe there are other, better technics in C++ to deal with such a problem ?
Regards,
apacz.

while calling it (a program). I know how works argc, argv. I just asked if it's neat to use it when I'm coding in C++ - because I rather connect that mechanism with pure C. Probably "communicate" wasn't the best word to describe what I wanted - just injecting some information from user to a program and not using streams.
Regards,
apacz.

>>int main(int argc, char *argv[])

c++ standards did not change the way main() is declared. Its the same in c++ as it is in C. You might check boost libraries to see if it has a class that parses the arguments, similar to maybe getopt() in linux.

int main(int argc, char* argv[]) is normal for C++, however, if you'd prefer to have the commandline arguments inside a std::vector<std::string> you could always do something like this at the beginning of main -

Code:

#include <vector>
#include <string>

int main(int argc, char* argv[])
{
    std::vector<std::string> args;
    for(int i(0); i!=argc; ++i)
        args.push_back( std::string(argv[i]) );
}

Or:

Code:

std::vector<std::string> args(argv, argv+argc);

Yup. As far as the STL is concerned, a pointer is just a particular type of iterator. Formally, iterators are a type of object that supports certain operations. And a raw pointer (IIRC) supports the same operations required of a random access iterator. This is no accident: iterators were designed to be a generalisation of the concept of a pointer.