File I/O in c++ and linux command line redirect

Question

I've got a program that accepts a text file with a map on it, then finds the shortest path and outputs that to another file.

it needs to work like this

./pathFinder -arg < inputMap.txt > outputMap.txt

My question is, with this input, what would get filled into argv[] and argc (do the redirects count as arguments), and also should I use file streams or just cin/cout... or maybe something else. Thanks.

Answer 1

argc will be 2, and argv[1] will point to "-arg".

Redirects will simply appear on stdin and stdout (wrapped by std::cin and std::cout).