Question

Your task is to write a program which: asks the user her/his birthday (in the format YYYYMMDD, or YYYYDDMM, or MMDDYYYY - actually, the order of the digits doesn't matter) outputs the Digit of Life for the date.

Answer 1

The Digit of Life is calculated by writing a program that adds up the digits of a user's birthday until a single digit remains. This digit is the output provided to the user.

Step-by-step explanation:

The Digit of Life is a concept reminiscent of numerology where a single digit is derived from the digits of one's birth date. To calculate this, you first need to write a program that asks the user for their birthday in any order of YYYYMMDD, MMDDYYYY, or YYYYDDMM. Once provided, add all the individual digits together. If the sum is a multi-digit number, then those digits are added together again, and the process repeats until a single digit remains. This final single digit is known as the Digit of Life.

For example, if a user inputs their birthday as 19901230 (YYYYMMDD for December 30, 1990), the calculation would be 1 + 9 + 9 + 0 + 1 + 2 + 3 + 0 = 25. Since 25 is a two-digit number, add 2 + 5 to get 7, which is the Digit of Life. The program would then output this number to the user.