For some reason im having trouble with this assigment. I downloaded and followed the steps given to me but the programs dont compile. I remove the.txt extention and saved the files in C:.I need for both files to work. The compiler says .For the first program It say " 1>c:\users\owner\desktop\project30\unit1.cpp(1): fatal error C1083: Cannot open include file: 'c:/cpp/classes/Date.cpp': No such file or directory". For the second it says " 1>c:\users\owner\desktop\project33\source.cpp(1): fatal error C1083: Cannot open include file: 'stdafx': No such file or directory".

Visual Studio Date Class Project

In your C++ compiler, write the program shown below:

Program 1:

#include "c:/cpp/classes/Date.cpp" #include using namespace std; int main() { Date today; cout<

Program 2: #include "stdafx" #include "c:/cpp/classes/Date.cpp" #include using namespace std; int main() { Date today; cout << today << endl; system("pause"); Date darwinBirthday(2,12,1809); cout << darwinBirthday << endl; system("pause"); Date lincolnBirthday("2/12/1809"); cout << darwinBirthday << endl; system("pause"); return 0; }//main

Create a folder on your computer called C:/cpp/classes

Download Date.cpp and save it as Date.cpp to the folder you created, by selecting File, Save page as.(Make sure you remove the .txt extension.)

Here is the file for Date.cpp:

#include "Date.h"

Date::Date() { //constructor to assign todays date to date char data[9]; //holder for the date _strdate_s(data); //gets the current date mm/dd/yy string date=data; //copy to a string for parsing month=stoi(date.substr(0,2)); //gets characters 0 and 1 of date and converts to int day=stoi(date.substr(3,2)); //gets characters 3 and 4 of date and converts to int year=stoi(date.substr(6,2))+2000; //gets characters 6 and 7 of date and converts to int if(leapYear()) days2[2]=29; else days2[2]=28; for(int m=0;m<13;m++) days[m]=days2[m]; }//constructor for today

static bool validDate(int m, int d, int y) { bool valid=true; //assume it is valid until found to be invalid if(y<1000) valid=false; if(m<1 || m>12) valid=false; if(leapYear(y)) days2[2]=29; else days2[2]=28; if(d<1 || d>days2[m]) valid=false; return valid; }//validDate

Date::Date(int m, int d, int y) { //constructor to assign values to month day and year if(validDate(m,d,y)) { month=m; day=d; year=y; } else { month=day=1; year=1970; //Unix time starting point } //not valid: set to default valid date for(int m=0;m<13;m++) days[m]=days2[m]; } //constructor with assigned values

Date::Date(int julian) { //Fliegel-Van Flandern algorithm to convert Julian date to Gregorian number month, day, and year gregorian(julian,month,day,year); if(leapYear()) days2[2]=29; else days2[2]=28; for(int m=0;m<13;m++) days[m]=days2[m]; }//Date Julian

Date::Date (string str) { //constructor for todays date as "mm/dd/year //Parse str by adding one char at a s time to the token until a "/" is encounter. //When "/" is encountered start the next token //int p=0; int count=0; int num[3]; string token[3]; int len=str.length(); for(int p=0; p if(str.substr(p,1)=="/") count++; else token[count]+=str.substr(p,1); }//parse str to create array of tokens bool error=false; for(int p=0;p<3;p++) { try { num[p]=stoi(token[p]); }//try to convert to int catch(invalid_argument&) { num[p]=-1; error=true; } //catch }//each of the 3 tokens if(!error && validDate(num[0],num[1],num[2])) { month=num[0]; day=num[1]; year=num[2]; } //no error else { month=day=1; year=1970; //Unix time starting point } //not valid: set to default valid date for(int m=0;m<13;m++) days[m]=days2[m]; }//constructor with string such as "10/31/2016"

Date Date::operator=(const Date& otherDate) { //assigns another instance of the date class to this. month=otherDate.month; day=otherDate.day; year=otherDate.year; return *this; //allows date1=date=date3; }//overloaded operator =

Date Date::operator+(int numDays) { //Adds the number of days to the Julian date. Date other(month,day,year); //make copy of the date int jd=other.julian(); //find the Julian date jd+=numDays; //add the number of days to the Julian date gregorian(jd,other.month,other.day,other.year); //Convert the Julian date back to Gregorian if(other.leapYear()) days2[2]=29; else days2[2]=28; for(int m=0;m<13;m++) other.days[m]=days2[m]; return other; } //operator +

int Date::dayofYear() const { //returns the day of the year, ie 2/1/???? is the 32 day of the year int total=day; for(int m=1;m return total; }//dayofYear

void gregorian(int julian, int &mth, int &d, int &y) { //Fliegel-Van Flandern algorithm to convert Julian date to Gregorian month, day, and year int p,q,r,s,t,u,v; p = julian + 68569; q = 4*p/146097; r = p - (146097*q + 3)/4; s = 4000*(r+1)/1461001; t = r - 1461*s/4 + 31; u = 80*t/2447; v = u/11; y = 100*(q-49)+s+v; mth = u + 2 - 12*v; d = t - 2447*u/80; } //Gregorian

int Date::julian() const { int jd= day-32075+1461*(year+4800+(month-14)/12)/4+ 367*(month-2-(month-14)/12*12) /12-3*((year+4900+(month-14)/12)/100)/4; return jd;

} bool Date::leapYear() const { bool leap=false; if(year%4==0) leap=true; if(year%100==0 && year%400!=0) leap=false; return leap; }//leapYear

bool leapYear(int yr) { bool leap=false; if(yr%4==0) leap=true; if(yr%100==0 && yr%400!=0) leap=false; return leap; }//leapYear

int Date::weekday() const { //returns 0 for Sunday, 1 for Monday, etc. static int t[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 }; int y =year; y-= month < 3; return ( y + y/4 - y/100 + y/400 + t[month-1] + day) % 7; }//weekday

int Date::getMonth() const { //private variables cannot be accessed directly but require "getter" functions return month; }//getMonth

int Date::getDay() const { return day; }//

int Date::getYear() const { return year; }//getYear

string Date::toString() const { stringstream oss; //a stream to append the values oss<

bool Date::operator==(const Date& otherDate) { return (month==otherDate.month && day==otherDate.day && year==otherDate.year); }//operator ==

bool Date::operator<(const Date& otherDate) { //A date is less than another date if is earlier bool result=false; //assume false until proven true if(year else if(year==otherDate.year && month else if(year==otherDate.year && month==otherDate.month && day return result; }//operator

bool Date::operator>(const Date& otherDate) { //Convert both dates to Julian and compare the Julian dates int jd1=julian(); int jd2=otherDate.julian(); return jd1>jd2; }//operator

ostream& operator << (ostream &output, const Date &d) { output << d.toString(); return output; } // operator << istream& operator >> (istream &input, Date &d) { string s; input >> s; Date other(s); //create a new Date d=other; //assign the new Date to d return input; } // operator >>

Download Date.h and save it as Date.h to the folder you created, by selecting File, Save page as. (Make sure you remove the .txt extension.)

Here is the file for Date.h:

#ifndef Date_H

#define Date_H

#include

#include

#include

#include

using namespace std;

class Date {

private:

int month, day, year;

int days[13];

public:

//constructors

Date(); //constructor for todays date

Date(int m, int d, int y); //constructor to assign date

Date(string str); //constructor for todays date as "mm/dd/year

Date(int gregorian); //constructor to convert a Gregorian date to Date

//methods

int Date::getMonth() const; //returns the private variable month

int Date::getDay() const; //returns the private variable day

int Date::getYear() const; //returns the private variable year

string toString() const; //returns the string mm/dd/yyyy

bool Date::leapYear() const; //determines if the year is a leap year

int Date::dayofYear() const; //returns the day of the year: ie 2/1/???? is the 32 day of year

int Date::julian() const;

int Date::weekday() const; //returns 0 for Sunday, 1 for Monday, etc.

//overloaded operators

bool Date::operator==(const Date& otherDate); //2 dates are equal if month, day and year are equal

bool Date::operator<(const Date& otherDate); //a date is < another date if it is earlier

bool Date::operator>(const Date& otherDate); //a date is > another date if it is later

Date Date::operator=(const Date& otherDate); //let's you copy one date to another.

Date Date::operator+(int); //Assign new values to the date after adding the number of days

friend ostream& operator << (ostream &output, const Date &d);

friend istream& operator >> (istream &input, Date &d);

};

bool validDate(int m, int d, int y); //test other date

bool leapYear(int y); //let's you test any year, not just the year for the instance

int julian(int m, int d, int y); //convert any date to Julian

void gregorian(int jd, int &mth, int &d, int &y);

static int days2[]={0,31,28,31,30,31,30,31,31,30,31,30,31};

#endif