Function year

Exercises/Modules/Chapter 08/Soln8_01.cpp:47–52

Reads the year

// Reads the year
int year()
{
  const int low_year {1870};         // Program only works for folks under 150 years old 
  const int high_year {2020};        // and those already born...
  return validate_input(low_year, high_year, "a year");
}

// Reads the month
int month()