C++

Given the year inputted by the user, calculate the month and day of Easter Sunday. When the

program executes, it should produce output similar to this.

Easter Sunday Calculator

Enter the year: 1985

Easter Sunday is April 7, 1985

The formula is a complex one and produces the correct day for any year from 1900 through 2099. I have broken it down into intermediate steps as follows. Frequently, Easter Sunday is in March, but occasionally it is in April. The following formula calculates the day of the month in March of Easter Sunday.

let a = year % 19

let b = year % 4

let c = year % 7

now start to put these pieces together

let d = (19 * a + 24) % 30

let e = (2 * b + 4 * c + 6 * d + 5) % 7

finally, the day of the month of Easter Sunday is

let day = 22 + d + e

However, if the day is greater than 31, then subtract 31 days and the resulting value in day is in

April instead. But the equation is off by exactly 7 days if these years are used: 1954, 1981, 2049

and 2076. Thus, when the calculation is finished, if the year is one of these four, you must

subtract 7 days from the day variable. The subtraction does not cause a change in the month.

Test your program on the following years I have shown the day you should obtain in parentheses:

1985 (April 7)

1999 (April 4)

1964 (March 29)

2099 (April 12)

1900 (April 15)

1954 (April 18)

1981 (April 19)

2049 (April 18)

2076 (April 19)

1967 (March 26)