in c++: Assume that you have a text file named file1.dat contains some text written into it, write a function named vowelwords(), that reads the file file1.dat and creates a new file named file2.dat,...

Extracted text: in c++: Assume that you have a text file named file1.dat contains some text written into it, write a function named vowelwords(), that reads the file file1.dat and creates a new file named file2.dat, to contain only those words from the file file1.dat which start with a lowercase vowel (i.e., with 'a', 'e', 'i', 'o', 'u').