What is the problem with test cases 3 and 5?

Question

You receive a date and need to know what day of the week it is.

Task:
Create a program that takes in a string containing a date, and outputs the day of the week.

Input Format:
A string containing a date in either "MM/DD/YYYY" format or "Month Day, Year" format.

Output Format:
A string containing the day of the week from the provided date.

Sample Input:
11/19/2019

Sample Output:
Tuesday
https://code.sololearn.com/c6oKVWqaOb8N/?ref=app

Answer 1

Nice 👍

Now that you've done it the hard way, also look up the std::chrono header, notably the "weekday" function.

Answer 2

The most boring but also hardest to f troubleshoot reason: it's just giving wrong answers. 5/12/1900 returns Thursday, for example, but should be Saturday.

Answer 3

Thanks, I decided to solve this problem in another way. It works now.
https://code.sololearn.com/cyqXQh63nJ6v/?ref=app