What is the difference between:
fstream texfile;
textfile.open("Test.txt");
and
ofstream textfile;
textfile.open("Test.txt");
Are their function the same?
Answer
ofstream only has methods for outputting, so for instance if you tried textfile >> whatever it would not compile. fstream can be used for input and output, although what will work depends on the flags you pass to the constructor / open.
std::string s;
std::ofstream ostream("file");
std::fstream stream("file", stream.out);
ostream >> s; // compiler error
stream >> s; // no compiler error, but operation will fail.
The comments have some more great points.