Is there an equivalent readline().split() python function in C++?

Essentially, the

int main( int argc, char** argv )

does exactly that (or to a very close extent). I was wondering if I could replicate the functionality of the int main( ... ) with other functions as well. For example, say I have a

readline();

function that reads a line from a file. I would like to know how many arguments the 开发者_开发知识库line contained argc, as well as an array to each argument that (where a space in the line represents a new argument) argv. So I have two questions:

1. Does such a function exist in C++ other than the int main() function?
2. If not, would it be difficult to write one. If the answer to this one is also no, I'd love to hear a few pointers on where to start. I'm not that experienced with C++ and I wasn't sure whether the string class has anything with this functionality.

Thanks!

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boost::split

#include <boost/algorithm/string.hpp>
std::vector<std::string> strs;
boost::split(strs, "word1 word2 word3", boost::is_any_of(", "));