Enums can and often are used as the cases in switch statements. An fstream provides a one-way connection to a file. Preconditions are conditions that must be true of the input to a function 2. Show the binary representation for the numbers 23 and 37. Read and print out the list of words, one per line.
Recursive functions are functions that call themselves.
Every recursive function must have a recursive part and an anchor part. The recursive part is a call to the function itself. The anchor part is a test that, if true, will result in the function not calling itself.