converting normal date to Julian date

[jessicacats]

okay, so here i am again asking for help (I do also ask my teacher for lots help also so please don't think I'm not trying lol) this code is suppose to convert a date to a Julian date using a function (i;m not very good at functions) and I have this code taking in the date that the user inputs and I believe I have the right conversion for the Julian date, but when I input a date it doesn't work, it just never ends. I think all I need is to figure out what to call for the function and put it in the right place to work.

here's my main funciton and the julian date function. I have three other functions for seeing if the date is valid or not as well.

void main(void)
{

	unsigned int mm = 0, dd = 0, yyyy, day_of_year = 0;
	unsigned int i = 0;
	char answer = 'Y';

	do {

		day_of_year = 0;

		cout << "Please enter the month, day and year like MM DD YYYY." << endl;
		cin >> mm >> dd >> yyyy;
		//
		//	The following WHILE LOOP is used to make sure that the 
		//	data entered are correct.
		//

		while (!valiDATE(mm, dd, yyyy))
		{
			cout << "Please enter the month, day and year like MM DD YYYY." << endl;
			cin >> mm >> dd >> yyyy;
		};

		cout << "The date has been validated." << endl << endl;

		unsigned int juliandate(mm, dd, yyyy);
		cout << "The Julian Date is: " << juliandate << endl;


		cout << "Do you want to continue (Y/N)?" << endl;
		cin >> answer;

	} while (answer == 'Y' || answer == 'y');

	cout << endl << endl << endl;
	system("pause");
}


//Function to take date of installation and convert it to a julian date
unsigned int juliandate(unsigned int year, unsigned int month, unsigned int day)
{//Passes in Installation date
	//Declare variables to be used in converting date
	int julianDate;
	int I;
	int J;
	int K;
	I = year;
	J = month;
	K = day;

	//Formula to convert gregorian date to julian date
	julianDate = K - 32075 + 1461 * (I + 4800 + (J - 14) / 12) / 4 + 367 *
		(J - 2 - (J - 14) / 12 * 12) * 2 / 12 - 3 * ((I + 4900 + (J - 14) / 12) / 100) / 4;

	return julianDate;

[jessicacats]

here'x the code

#include <iostream>
#include <fstream>
#include <iomanip>
#include <string>

using namespace std;

// Define function prototypes here.

unsigned int days_in_month(unsigned int, unsigned int);
unsigned int leap(unsigned int);
bool valiDATE(unsigned int, unsigned int, unsigned int);
unsigned int juliandate(unsigned int year, unsigned int month, unsigned int day);

void main(void)
{

	unsigned int mm = 0, dd = 0, yyyy, day_of_year = 0;
	unsigned int i = 0;
	char answer = 'Y';

	do {

		day_of_year = 0;

		cout << "Please enter the month, day and year like MM DD YYYY." << endl;
		cin >> mm >> dd >> yyyy;
		//
		//	The following WHILE LOOP is used to make sure that the 
		//	data entered are correct.
		//

		while (!valiDATE(mm, dd, yyyy))
		{
			cout << "Please enter the month, day and year like MM DD YYYY." << endl;
			cin >> mm >> dd >> yyyy;
		};

		cout << "The date has been validated." << endl << endl;

		unsigned int juliandate(mm, dd, yyyy);
		cout << "The Julian Date is: " << juliandate << endl;


		cout << "Do you want to continue (Y/N)?" << endl;
		cin >> answer;

	} while (answer == 'Y' || answer == 'y');

	cout << endl << endl << endl;
	system("pause");
}



unsigned int days_in_month(unsigned int month, unsigned int year){

	unsigned int days = 0;

	if (month == 2) {
		days = 28 + leap(year);  // function leap returns 1 for leap years
	}
	else if (month == 4 || month == 6 || month == 9 || month == 11) {
		days = 30;
	}
	else {
		days = 31;
	}

	return days;
}


unsigned int leap(unsigned int year)
{
	if (year % 400 == 0)
		return 1;
	else if (year % 100 != 0 && year % 4 == 0)
		return 1;
	else
		return 0;
}



bool valiDATE(unsigned int month, unsigned int day, unsigned int year) {
	unsigned int flag = 0;
	unsigned int days = 0;

	// Validate the month first

	if (month < 1 || month > 12) {
		cout << "Value for month (MM) is out of range." << endl;
		return false;
	}

	// Validate the day of month

	days = days_in_month(month, year);

	if (day < 1 || day > days) {
		cout << "Value for day (DD) is out of range." << endl;
		return false;
	}

	// Validate the year

	if (year < 1990 || year > 2020) {
		cout << "Value for year (YYYY) is out of range." << endl;
		return false;
	}

	return true;

}

//Function to take date of installation and convert it to a julian date
unsigned int juliandate(unsigned int year, unsigned int month, unsigned int day)
{//Passes in Installation date
	//Declare variables to be used in converting date
	int julianDate;
	int I;
	int J;
	int K;
	I = year;
	J = month;
	K = day;

	//Formula to convert gregorian date to julian date
	julianDate = K - 32075 + 1461 * (I + 4800 + (J - 14) / 12) / 4 + 367 *
		(J - 2 - (J - 14) / 12 * 12) * 2 / 12 - 3 * ((I + 4900 + (J - 14) / 12) / 100) / 4;

	return julianDate;

[AbstractionAnon]

So what are you asking for help with?

You haven't shown your code, so we can't comment on that.

[jessicacats]

i had to comment it under the question because it was to long for the code and the asking for help paragraph to be in the same box.

Whenever i run the code, after you enter a date, nothing happens, you can just keep pressing enter. I'm not sure where to call the Julian date function or if it's even right.

[AbstractionAnon]

Line 41: This line is causing a compile error.

Try this:

    unsigned jdate;
    jdate = juliandate(mm, dd, yyyy);
    cout << "The Julian Date is: " << jdate << endl;

Note: I did not check your algorithms. I only corrected the syntax error.

[jessicacats]

Thank you that fixed it!!