Write a complete C++ program in one file here which reads a list of names from a file called "roster. txt" (names may contain spaces, one name per line) and stores them in a vector of strings. The file may have any number of names in it (your code cannot be dependent on a specific size). After having read in the names, print out the number of names in the vector using the vector size and print the names themselves from the vector. Your program must use a function to read from the file into the vector and another function to print the names from the vector. Upload as names. cpp – you do NOT need to upload roster. txt. (15