For reproducibility needed for auto-grading, seed the program with a value of 2. in a real program, you would seed with the current time. in that case, every program's output would be different, which is what is desired but can't be auto-graded. note: a common student mistake is to call srand() before each call to but seeding should only be done once, at the start of the program, after which rand() can be called any number of times. your program must define and call the following function that returns "heads" or "tails". string headsortails()