Zeller's congruence is an algorithm developed by Christian Zeller to calculate the day of the week. The formula is: h = (q + 26(m + 1)/10 + k + k/4 + j/4 + 5j) % 7 where -h is the day of the week (0: Saturday, 1: Sunday, 2: Monday, 3: Tuesday, 4:
Zeller's congruence is an algorithm developed by Christian Zeller to calculate the day of the week. The formula is: h = (q + 26(m + 1)/10 + k + k/4 + j/4 + 5j) % 7 where -h is the day of the week (0: Saturday, 1: Sunday, 2: Monday, 3: Tuesday, 4:
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:Chapter 3: Programming Project 4
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(Science: day of the week)
Zeller's congruence is an algorithm developed by Christian Zeller to calculate
the day of the week.
The formula is:
h = (q + 26(m + 1)/10 + k + k/4 +j/4 + 5j) % 7
where
- h is the day of the week (0: Saturday, 1: Sunday, 2: Monday, 3: Tuesday, 4:
Wednesday, 5: Thursday, 6: Friday).
- q is the day of the month.
-m is the month (3: March, 4: April, ..., 12: December). January and February
are counted as months 13 and 14 of the previous year.
-jis year/100
-k is the year of the century (i.e., year % 100)
Note that all divisions in this exercise perform an integer division.
Write a program that prompts the user to enter a year, month, and day of the
month, and displays the name of the day of the week.
Sample Run 1
Enter year: (e.g., 2012): 2015
Enter month: 1-12: 1
Enter the day of the month: 1-31: 25
Day of the week is Sunday
Sample Run 2
Enter year: (e.g., 2012): 2012
Enter month: 1-12: 5
Enter the day of the month: 1-31: 12
Day of the week is Saturday
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