Two questions in C++

[AMD Inside]

What would be the easiest way to output text to the console from a file?

If the file was this:

This is
the
file I am reading

cout should print that to the console. Is there an echo command? or would I use getline?

Also, how can I accept a file from the command prompt?

cout << "Enter a filename";
cin >> file;

ifstream inFile;
inFile.open(file);

does not work.