I need to write a C++ program that can be used to calculate the date of any Easter Sunday which can be computed as follows;

Let X be the year for which it is desired to compute Easter Sunday.
Let A be the remainder of the division of X by 19.
Let B be the remainder of the division of X by 4.
Let C be the remainder of the division of X by 7.
Let D be the remainder of the division of (19*A+24) by 30.
Let E be the remainder of the division of (2*B+4*C+6*D+5) by 7.

Easter Sunday = March 22+D+E. (Note-This can give a date in April)

The program should prompt the user for a year and then calculates and outputs (properly labeled), the correct month, day and year for that year’s Easter Sunday.

I'm understanding the subject a little bit. I think there it should include 'if' and 'else' statements.

See my code I have thus far: I get an error message that says that 'x' has not been assigned a value...But 'x' is what I want to personally enter as 'cin'- the year.

Thanks.
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You are trying to output the value of x before actually getting the value. IE. You are using cout<<x<< endl; before cin>> x;

Ok...thx for your help-now I see it. But where would and 'if' else statement be necessary in such a program? I'm in my first month of C++ and I'm struggling to catch on to it. I really appreaciate all the assistance. I had tried and example- i had inputted '1999'- and i got a result of '749'. I know it doesn't make any sense, but It's suppose to calculate and show the day, month and year. Thx.

That error message means that when line line 12 is executed variable x has not been assigned a value yet so it just contains some random value. Programs are normally executed in the same order that you code them, so line 12 is executed immediately after line 11, and line 13 after line 12, etc.

To correct the error you received you need to move lines 18, 19 and 20 up between line 11 and 12 so that the value of x is entered at the keyboard before attemtping to execute lines 12 thru 16.

Ok...thx for your help-now I see it. But where would and 'if' else statement be necessary in such a program? I'm in my first month of C++ and I'm struggling to catch on to it. I really appreaciate all the assistance. I had tried and example- i had inputted '1999'- and i got a result of '749'. I know it doesn't make any sense, but It's suppose to calculate and show the day, month and year. Thx.

Well firstly you are trying to do math with x before it actually has a variable so once it gets the others (a, b, c, d, e, sun) aren't actually giving the correct number

You want to run that by me again? If i enter a value from the keyboard-doesn't a program automatically do the calculation? You kinna lost me there.

Also, where do the 'if' and 'else' statements come into play with such a program?

Yes it does but you are trying to do the calculations before you have gotten any input. It is trying to do the math on a number that doesn't exist.

#include "stdafx.h"
#include <iostream>
#include <string>
#include <cmath>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <iomanip>

using namespace std;

int main()
{
cout<< "Enter the year you wish to inquire about";



int x;//The year for which it is desired to compute Easter Sunday.
cin>> x;//The 4-digit year.
int a = x % 19;//The remainder of the division of x by 19.
int b = x % 4;//The remainder of the division of x by 4.
int c = x % 7;//The remainder of the division of x by 7.
int d = (19 * a + 24) % 30;//The remainder of the division of (19*a + 24) by 30.
int e = (2 * b + 4 * c + 6 * d + 5) % 30;//The remainder of the division of (2*b+4*c+6*d+5) by 7.
int sun = (22 + d + e);//The calculation of easter sunday.
cout<<setw(4)<< "Day" <<setw(8)<< "Month" <<setw(8)<< "Year"<<endl;
cout<<setw(20)x<<endl;

return 0;
}
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But doesn't my position of 'cin' allow for that value to be calculated? I was able to get the year...and how does this program require a 'if' and 'else' statements?