Coding Language C++Note: Do not make use of coding techniques that are too advanced. Techniques such as linked lists, recursive functions are not permitted. Must be done using classesPrivate Member FunctionsThe member functions declared private, isLeap, daysPerMonth, name, number, are helper functions - member functions that will never be needed by a user of the class, and so do not belong to the public interface (which is why they are "private"). They are, however, needed by the interface functions (public member functions), which use them to test the validity of arguments and construct valid dates. For example, the constructor that passes in the month as a string will call the number function to assign a value to the unsigned member variable month.isLeap: The rule for whether a year is a leap year is:(year % 4 == 0) implies leap yearexcept (year % 100 == 0) implies NOT leap yearexcept (year % 400 == 0) implies leap yearSo, for instance, year 2000 is a leap year, but 1900 is NOT a leap year. Years 2004, 2008, 2012, 2016, etc. are all leap years. Years 2005, 2006, 2007, 2009, 2010, etc. are NOT leap years.Output SpecificationsRead the specifications for the print function carefully. The only cout statements within your Date member functions should be:the "Invalid Date" warnings in the constructorsin your two print functionsRequired Main FunctionYou must use the provided main function and global function getDate as they are here. You may not change these functions at all to pass the tests in submit mode. /* Returns true if the year passed in is a leap year, otherwise returns false.*/bool isleap(unsigned y) const;/* Returns number of days allowed in a given monthe.g. daysPerMonth(9, 2000) returns 30.Calculates February's days for leap and non-leap years,thus, the reason year is also a parameter.-unsigned daysPerMonth(unsigned m, unsigned y) const;/* Returns the name of a given month- e.g. name(12) returns the string "December"*/string name(unsigned m) const;/* Returns the number of a given named month- e.g. number("March") returns 3* /unsigned number(const string &mn) const;};// Implement the Date member functions here// Don't change the code below this line.// You may comment them out if you want to build your own test harness// while in develope mode, but you will need these to pass tets in submit mode.Date getDate();int main() {Date testDate;testDate = getDate();cout <« endl;cout <« "Numeric: ";testDate.printNumeric();cout <« endl;cout <« "Alpha:testDate.printAlpha();cout << endl;";return 0;}Date getDate() {int choice;unsigned monthNumber, day, year;string monthName;cout <« "Which Date constructor? (Enter 1, 2, or 3)" <« endl« "1 - Month Number" << endl<« "2 - Month Name" << endl« "3 - default" << endl;cin >> choice;cout <« endl;if (choice == 1) {cout <« "month number? ";cin >> monthNumber;cout <« endl;cout « "day? ";cin >> day;cout <« endl;cout « "year? ";cin >> year;cout <« endl;return Date(monthNumber, day, year);} else if (choice == 2) {cout <« "month name? ";cin >> monthName;cout <« endl;cout <« "day? ";cin >> day;cout <« endl;cout « "year? ";cin >> year;cout <« endl;return Date(monthName, day, year);} else {return Date();}} #include #include using namespace std;class Date {private:unsigned day;unsigned month;string monthName;unsigned year;public:// creates the date January 1st, 2000.Date();/* parameterized constructor: month number, day, year- e.g. (3, 1, 2010) will construct the date March 1st, 2010If any of the arguments are invalid (e.g. 15 for month or 32 for day)then the constructor will construct instead a valid Date as closeas possible to the arguments provided - e.g. in above example,Date(15, 32, 2010), the Date would be corrected to Dec 31st, 2010.In case of such invalid input, the constructor will issue a console error message:Invalid date values: Date corrected to 12/31/2010.(with a newline at the end).* /Date(unsigned m, unsigned d, unsigned y);/* parameterized constructor: month name, day, year- e.g. (December, 15, 2012) will construct the date December 15th, 2012If the constructor is unable to recognize the string argument as a valid month namthen it will issue a console error message:Invalid month name: the Date was set to 1/1/200e.(with a newline at the end).If the day argument is invalid for the given month (but the month name was valid),then the constructor will handle this error in the same manner as the otherparameterized constructor.This constructor will recognize both "december" and "December"as month name.Date(const string &mn, unsigned d, unsigned y);/* Outputs to the console (cout) a Date exactly in the format "3/15/2012".Does not output a newline at the end.* /void printNumeric() const;/* Outputs to the console (cout) a Date exactly in the format "March 15, 2012".The first letter of the month name is upper case, and the month name isprinted in fullJanuary, not Jan, jan, or january.Does not output a newline at the end.*/void printAlpha() const;private:/* Returns true if the year passed in is a leap year, otherwise returns false.* /bool isLeap(unsigned y) const;/* Returns number of days allowed in a given month- e.g. daysPerMonth(9, 2000) returns 30.Calculates February's days for leap and non-leap years,thus, the reason year is also a parameter.*/unsigned daysPerMonth(unsigned m, unsigned y) const;/* Returns the name of a given month- e.g. name (12) returns the string "December"*/string name(unsigned m) const;/* Returns the number of a given named month- e.g. number("March") returns 3*/unsigned number(const string &mn) const;};// Implement the Date member functions here

Actually, c++ is a powerful general purpose language.

Private Member Functions The member functions declared private, isLeap, daysPerMonth, name, number, are helper functions - member functions that will never be needed by a user of the class, and so do not belong to the public interface (which is why they are "private"). They are, however, needed by the interface functions (public member functions), which use them to test the validity of arguments and construct valid dates. For example, the constructor that passes in the month as a string will call the number function to assign a value to the unsigned member variable month. isLeap: The rule for whether a year is a leap year is: (year % 4 == 0) implies leap year except (year % 100 == 0) implies NOT leap year except (year % 400 == 0) implies leap year So, for instance, year 2000 is a leap year, but 1900 is NOT a leap year. Years 2004, 2008, 2012, 2016, etc. are all leap years. Years 2005, 2006, 2007, 2009, 2010, etc. are NOT leap years. Output Specifications Read the specifications for the print function carefully. The only cout statements within your Date member functions should be: the "Invalid Date" warnings in the constructors in your two print functions Required Main Function You must use the provided main function and global function getDate as they are here. You may not change these functions at all to pass the tests in submit mode.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Coding Language C++

Note: Do not make use of coding techniques that are too advanced. Techniques such as linked lists, recursive functions are not permitted.

Must be done using classes

Private Member Functions

The member functions declared private, isLeap, daysPerMonth, name, number, are helper functions - member functions that will never be needed by a user of the class, and so do not belong to the public interface (which is why they are "private"). They are, however, needed by the interface functions (public member functions), which use them to test the validity of arguments and construct valid dates. For example, the constructor that passes in the month as a string will call the number function to assign a value to the unsigned member variable month.

isLeap: The rule for whether a year is a leap year is:

(year % 4 == 0) implies leap year
except (year % 100 == 0) implies NOT leap year
except (year % 400 == 0) implies leap year

So, for instance, year 2000 is a leap year, but 1900 is NOT a leap year. Years 2004, 2008, 2012, 2016, etc. are all leap years. Years 2005, 2006, 2007, 2009, 2010, etc. are NOT leap years.

Output Specifications

Read the specifications for the print function carefully. The only cout statements within your Date member functions should be:

the "Invalid Date" warnings in the constructors
in your two print functions

Required Main Function

You must use the provided main function and global function getDate as they are here. You may not change these functions at all to pass the tests in submit mode.

/* Returns true if the year passed in is a leap year, otherwise returns false.
*/
bool isleap(unsigned y) const;
/* Returns number of days allowed in a given month
e.g. daysPerMonth(9, 2000) returns 30.
Calculates February's days for leap and non-leap years,
thus, the reason year is also a parameter.
-
unsigned daysPerMonth(unsigned m, unsigned y) const;
/* Returns the name of a given month
- e.g. name(12) returns the string "December"
*/
string name(unsigned m) const;
/* Returns the number of a given named month
- e.g. number("March") returns 3
* /
unsigned number(const string &mn) const;
};
// Implement the Date member functions here
// Don't change the code below this line.
// You may comment them out if you want to build your own test harness
// while in develope mode, but you will need these to pass tets in submit mode.
Date getDate();
int main() {
Date testDate;
testDate = getDate();
cout <« endl;
cout <« "Numeric: ";
testDate.printNumeric();
cout <« endl;
cout <« "Alpha:
testDate.printAlpha();
cout << endl;
";
return 0;
}
Date getDate() {
int choice;
unsigned monthNumber, day, year;
string monthName;
cout <« "Which Date constructor? (Enter 1, 2, or 3)" <« endl
« "1 - Month Number" << endl
<« "2 - Month Name" << endl
« "3 - default" << endl;
cin >> choice;
cout <« endl;
if (choice == 1) {
cout <« "month number? ";
cin >> monthNumber;
cout <« endl;
cout « "day? ";
cin >> day;
cout <« endl;
cout « "year? ";
cin >> year;
cout <« endl;
return Date(monthNumber, day, year);
} else if (choice == 2) {
cout <« "month name? ";
cin >> monthName;
cout <« endl;
cout <« "day? ";
cin >> day;
cout <« endl;
cout « "year? ";
cin >> year;
cout <« endl;
return Date(monthName, day, year);
} else {
return Date();
}
}

#include <iostream>
#include <string>
using namespace std;
class Date {
private:
unsigned day;
unsigned month;
string monthName;
unsigned year;
public:
// creates the date January 1st, 2000.
Date();
/* parameterized constructor: month number, day, year
- e.g. (3, 1, 2010) will construct the date March 1st, 2010
If any of the arguments are invalid (e.g. 15 for month or 32 for day)
then the constructor will construct instead a valid Date as close
as possible to the arguments provided - e.g. in above example,
Date(15, 32, 2010), the Date would be corrected to Dec 31st, 2010.
In case of such invalid input, the constructor will issue a console error message:
Invalid date values: Date corrected to 12/31/2010.
(with a newline at the end).
* /
Date(unsigned m, unsigned d, unsigned y);
/* parameterized constructor: month name, day, year
- e.g. (December, 15, 2012) will construct the date December 15th, 2012
If the constructor is unable to recognize the string argument as a valid month nam
then it will issue a console error message:
Invalid month name: the Date was set to 1/1/200e.
(with a newline at the end).
If the day argument is invalid for the given month (but the month name was valid),
then the constructor will handle this error in the same manner as the other
parameterized constructor.
This constructor will recognize both "december" and "December"
as month name.
Date(const string &mn, unsigned d, unsigned y);
/* Outputs to the console (cout) a Date exactly in the format "3/15/2012".
Does not output a newline at the end.
* /
void printNumeric() const;
/* Outputs to the console (cout) a Date exactly in the format "March 15, 2012".
The first letter of the month name is upper case, and the month name is
printed in full
January, not Jan, jan, or january.
Does not output a newline at the end.
*/
void printAlpha() const;
private:
/* Returns true if the year passed in is a leap year, otherwise returns false.
* /
bool isLeap(unsigned y) const;
/* Returns number of days allowed in a given month
- e.g. daysPerMonth(9, 2000) returns 30.
Calculates February's days for leap and non-leap years,
thus, the reason year is also a parameter.
*/
unsigned daysPerMonth(unsigned m, unsigned y) const;
/* Returns the name of a given month
- e.g. name (12) returns the string "December"
*/
string name(unsigned m) const;
/* Returns the number of a given named month
- e.g. number("March") returns 3
*/
unsigned number(const string &mn) const;
};
// Implement the Date member functions here

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