Question

python.Write a python program that prompts the user to enter the year and first day of the year, and displays the first day of each month in the year. For example, if the user entered the year 2020 and 3 for Wednesday, January 1, 2020, your program should display the following output:

January 1, 2020 is Wednesday

February 1, 2020 is Saturday ……

December 1, 2020 is Tuesday

Answer 1

Required program in python -->

days=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]
year=int(input("Enter year"))
day=int(input("Enter day"))
if year % 4 == 0 and year % 100 != 0:
February=29
elif year % 100 == 0:
February=28
elif year % 400 ==0:
February=29
else:
February=28
print("January 1,",year," is ",days[day])
f=(day+31)%7
feb=days[f]
print("February 1,",year," is ",feb)
m=(f+February)%7
march=days[m]
print("March 1,",year," is ",march)
a=(m+31)%7
april=days[a]
print("April 1,",year," is ",april)
ma=(a+30)%7
may=days[ma]
print("May 1,",year," is ",may)
j=(ma+31)%7
june=days[j]
print("June 1,",year," is ",june)
ju=(j+30)%7
july=days[ju]
print("July 1,",year," is ",july)
au=(ju+31)%7
august=days[au]
print("August 1,",year," is ",august)
s=(au+31)%7
september=days[s]
print("September 1,",year," is ",september)
o=(s+30)%7
october=days[o]
print("October 1,",year," is ",october)
n=(o+31)%7
november=days[n]
print("November 1,",year," is ",november)
d=(n+30)%7
december=days[d]
print("December 1,",year," is ",december)

This program first take year as an input from user, then it checks whether a year is leap year or not, if it is leap year than it assigns February to 29, else to 28. Then we have a list from which we can count the days for each given month. We know jan has 31 days, march has 31 days, april has 30 days, like this, we find the remainder of days with 7, and then we access the list days[], and provide the output with suitable days.

o/p ->

Enter year2020                                                                                                                         

Enter day3                                                                                                                             

January 1, 2020  is  Wednesday                                                                                                         

February 1, 2020  is  Saturday                                                                                                         

March 1, 2020  is  Sunday                                                                                                              

April 1, 2020  is  Wednesday                                                                                                           

May 1, 2020  is  Friday                                                                                                                

June 1, 2020  is  Monday                                                                                                               

July 1, 2020  is  Wednesday                                                                                                            

August 1, 2020  is  Saturday                                                                                                           

September 1, 2020  is  Tuesday                                                                                                         

October 1, 2020  is  Thursday                                                                                                          

November 1, 2020  is  Sunday                                                                                                           

December 1, 2020  is  Tuesday