Question

FINDING THE LEAP YEARS (14 points) From Wikipedia, "A leap year (also known as an intercalary year or bissextile year) is a calendar year containing one additional day (or, in the case of lunisolar calendars, a month) added to keep the calendar year synchronized with the astronomical or seasonal year." In the Gregorian calendar, which is in use today, to determine leap year: A year is a leap year if it is divisible by 400 Or it is divisible by 4, but it is not divisible by 100 Your task is: Write a MATLAB script with the filename leapyear.m The script will take an input year number from the user, and output if it is a leap year. To test your program, refer to the following table. When running your code, besides the input prompt message, your code should only print a similar sentence as the OUTPUT column below. INPUT 1900 2012 2100 2400 OUTPUT Not a leap year. A leap year. Not a leap year. A leap year. Not a leap year. 2015 Hint 1. To check if number als divisible by number m, one way is to use the mod function to calculate the remainder after division. If it is divisible, the remainder should be 0. For example, 4 is divisible by 2, then the reminder is 0. On the other hand, 4 is not divisible by 3, the reminder is not 0: >> mod (4,2) ans = Þ> mod (4,3) ans = Use 'doc mod command to check more details of the mod function. You can also use any other methods that work Cave your work in a file named leanwearm

Answer 1

leapyear.m

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year = input("Enter the year:") #ask for the input

if mod(year,4)!=0 #if year is not divisible by 4
fprintf('Not a leap year.\n')
elseif mod(year,100)!=0 #if year is not divisible by 100
fprintf('A leap year.\n')
elseif mod(year,400)!=0 #if year is not divisible by 400
fprintf('Not a leap year.\n')
else #else
fprintf('A leap year.\n')
end

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Screenshot of the code:

year = input("Enter the year:") #ask for the input N 5 6 if mod (year, 4)! =0 #if year is not divisible by 4 fprintf('Not a leap year. \n') elseif mod(year, 100)!=0 #if year is not divisible by 100, fprintf('A leap year.\n') elseif mod(year, 400) !=0 #if year is not divisible by 400 fprintf('Not a leap year. \n') else #elsel fprintf('A leap year. \n') end 11

Output:

octave:9> leapyear Enter the year:> 1900 year = 1900 Not a leap year. octave:10> leapyear Enter the year:> 2012 year = 2012 A leap year. octave:11> leapyear Enter the year:> 2100 year = 2100 Not a leap year. octave: 12> leapyear Enter the year:> 2400 year = 2400 A leap year. octave: 13> leapyear Enter the year:> 2015 year = 2015 Not a leap year.

adding.m

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a = randi([0 9],1,1); #generate a random number between 0 and 9
b = randi([0 9],1,1); #generate another random number between 0 and 9

if input(['What is ',num2str(a),' + ',num2str(b),' = '])==a+b #check if the input number is equal to the sum of the a and b
fprintf('Correct!\n')
else
fprintf('Wrong!\n')
end

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Screenshot of the code:

Output:

a - randi(10 91,1,1); #generate a random number between 0 and 9 b = randi([@ 9],1,1); #generate another random number between @ and 9, #check if the input number is equal to the sum of the a and bl NMNO if input(['What is , num2str(a),' + ', num2str(b),' - '])-=a+b fprintf("Correct!\n') else fprintf("Wrong!\n') end

octave:9> adding What is 2 + 2 = > 4 Correct! octave:10> adding What is 6 + 3 = > 6 Wrong!