Function validate_input

Exercises/Modules/Chapter 08/Soln8_01.cpp:33–44

Reads an integer that is between lower and upper inclusive

// Reads an integer that is between lower and upper inclusive
int validate_input(int lower, int upper, const std::string& description)
{
  int data {};
  std::cout << std::format("Please enter {} from {} to {}: ", description, lower, upper);
  std::cin >> data;
  while (data < lower || data > upper)
  {
    std::cout << "Invalid entry; please re-enter " << description << ": ";
    std::cin >> data;
  }
  return data;
}

// Reads the year
int year()