C++

Write a program that has three functions. The first takes an integer and computes how many digits there are in that integer. The second takes an integer and prints it out with spaces between the digits. This function will use the first function to help it. The final function has no arguments, but asks the user for a positive integer (and if they don't give one keeps asking until they do) Then, write a complete program that asks the user for a positive integer and prints out that integer with spaces between the digits. Use a top down approach