Output problem

[daveofva]

#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>

using namespace std;

const string ID = "David Lab 17";

int main()
{
ofstream fout;

string exit;

int year,
possible, // chance is possible
probable = 0, // chance is probable
definite, // chance is definite
invalid,
unequal;

fout.open("David Lab17.out");

cout << "Running Lab 17... " << ID << endl << endl;

cout << "Enter a year: ";
cin >> year;

fout << ID << endl << endl;

// bool

if (year % 4 == 0)
{ possible = true;
}

if (possible % 400 == 0)
{ probable = true;
}

if (probable != 0)
{ definite = true;
fout << year << "is a leap year";
}

if (year < 0)
{ invalid = true;
fout << year << "is not a valid year";
}

if (probable = 0)
{ (unequal = true);
fout << year << "is not a leap year";
}

// exit routine

cout << "Press any character and return to exit";
cin >> exit;

return 0;
}

For some reason, my output only shows my const string, not "(year) is a leap year" or "(year) is not a leap year". Can someone help me out?

[Moschops]

(probable = 0)

Did you mean (probable == 0)?

What is the variable unequal for? Looks like it never gets used.

[daveofva]

OOps, I did mean (probable == 0)...

unequal is for when the year does not equal a leap year

[daveofva]

Oh, I see I messed the formula up a little bit

[daveofva]

Ok, I changed it to this, but it still won't print anything but the const string ID

if (year % 4 == 0)
{ possible = true;
}

if (possible % 100 != 0)
{ probable = true;
}

if (probable % 400 == 0)
{ definite = true;
fout << year << " is a leap year";
}

if (year < 0)
{ invalid = true;
fout << year << " is not a valid year";
}

if (possible == 0)
{ (unequal = true);
fout << year << " is not a leap year";
}

[filipe]

Ihaven't really looked at your program (please use [ code ] [ /code ] tags), but you could implement a isLeapYear() function in a much cleaner manner:

bool isLeapYear(int year)
{
    return (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0));
}

[Moschops]

Try changing fout to cout.