c++ question: Define a class called Month that is an abstract data type for a mo
ID: 3722483 • Letter: C
Question
c++ question:
Define a class called Month that is an abstract data type for a month. Your
class should have a private intager variable that represents the month (1
for January, 2 for February, etc.). Include all the following member functions:
- A default constructor that set's the month to January.
- A constructor to set the month using the first three letters in the name
of the month as three arguments.
- A constructor to set the month using an integer as an argument.
- A mutator function that sets the month by passing in an integer.
- An accessor function that returns the value of the month as an integer.
- An accessor function that returns the first three letters in the name of the month.
- A Member function that returns the next month as a value of type Month.
Make sure your class validates user input to verify that a valid month was entered.
In main(), test your program by creating 3 different Month objects. The first month object
should use an integer value entered by the user as the argment to the constructor. Then,
use the Month class member functions to print out the first three letters of the corresponding
month and the first three letters of the next month.
The second month object should take 3 letters that the user enters as arguments to the constructor.
Then, use the Month class member functions to print out the value of that month as an integer, as
well as the first three letters of the next month.
The third month object should be created using the default constructor. Print out the first three letters
of that month and the next month.
This is the sample output:
The gray part is the prompts, and the yellow part is standard output
Enter a month value as an integer:12 This month is DEC. The next month is JAN Enter the first letter of the month name:s Enter the second letter of the month name:E Enter the third letter of the month name:P This is month number 9 The next month is OCT Using the default constructor, the month is JAN The next month is FEB.Explanation / Answer
#include <iostream>
#include <cstdlib>
#include <cctype>
using namespace std;
class Month {
public:
Month (char first, char second, char third);
Month (int aMonth);
Month ();
void inputNumber (istream& fin);
void inputLetter (istream& fin);
void outputNumber (ostream& fout);
void outputLetter (ostream& fout);
Month nextMonth();
private:
int month;
};
int main() {
Month test1, test2;
cout << "Enter a month value as an integer: ";
test1.inputNumber(cin);
cout << "The currunt month in number is: ";
test1.outputNumber(cout);
cout << "The currunt month is: ";
test1.outputLetter(cout);
cout << "The next month is: ";
test1.nextMonth();
//test1.outputLetter(cout);
//cout << "Or in number is: ";
//test1.outputNumber(cout);
//cout << endl;
cout << "Enter the month in character (first 3 letter): ";
test2.inputLetter(cin);
cout << "The currunt month in number is: ";
test2.outputNumber(cout);
cout << "The currunt month in letter is: ";
test2.outputLetter(cout);
cout << "The next month after this month is: ";
test2.nextMonth();
test2.outputLetter(cout);
cout << "Or in number is: ";
test2.outputNumber(cout);
cout << endl;
return 0;
}
Month::Month (char first, char second, char third) {
if (first == 'j' && second == 'a' && third == 'n')
month = 1;
else if (first == 'f' && second == 'e' && third == 'b')
month = 2;
else if (first == 'm' && second == 'a' && third == 'r')
month = 3;
else if (first == 'a' && second == 'p' && third == 'r')
month = 4;
else if (first == 'm' && second == 'a' && third == 'y')
month = 5;
else if (first == 'j' && second == 'u' && third == 'n')
month = 6;
else if (first == 'j' && second == 'u' && third == 'l')
month = 7;
else if (first == 'a' && second == 'u' && third == 'g')
month = 8;
else if (first == 's' && second == 'e' && third == 't')
month = 9;
else if (first == 'o' && second == 'c' && third == 't')
month = 10;
else if (first == 'n' && second == 'o' && third == 'v')
month = 11;
else if (first == 'd' && second == 'e' && third == 'c')
month = 12;
else {
cout << "Invalid month! ";
exit(1);
}
}
Month::Month (int aMonth) {
if (aMonth > 12 || aMonth < 1) {
cout << "Invalid month! ";
exit(1);
}
else
month = aMonth;
}
Month::Month () {
}
void Month::inputNumber(istream& fin) {
fin >> month;
if (month > 12 || month < 1) {
cout << "Invalid month! ";
exit(1);
}
}
void Month::inputLetter(istream& fin) {
char first, second, third;
fin >> first >> second >> third;
first = tolower(first);
second = tolower(second);
third = tolower(third);
if (first == 'j' && second == 'a' && third == 'n')
month = 1;
else if (first == 'f' && second == 'e' && third == 'b')
month = 2;
else if (first == 'm' && second == 'a' && third == 'r')
month = 3;
else if (first == 'a' && second == 'p' && third == 'r')
month = 4;
else if (first == 'm' && second == 'a' && third == 'y')
month = 5;
else if (first == 'j' && second == 'u' && third == 'n')
month = 6;
else if (first == 'j' && second == 'u' && third == 'l')
month = 7;
else if (first == 'a' && second == 'u' && third == 'g')
month = 8;
else if (first == 's' && second == 'e' && third == 't')
month = 9;
else if (first == 'o' && second == 'c' && third == 't')
month = 10;
else if (first == 'n' && second == 'o' && third == 'v')
month = 11;
else if (first == 'd' && second == 'e' && third == 'c')
month = 12;
else {
cout << "Invalid month! ";
exit(1);
}
}
Month Month::nextMonth() {
if (month < 12)
month++;
else
month = 1;
return month;
}
void Month::outputNumber(ostream& fout) {
fout << month << endl;
}
void Month::outputLetter(ostream& fout) {
if (month == 1)
fout << "Jan";
else if (month == 2)
fout << "Feb";
else if (month == 3)
fout << "Mar";
else if (month == 4)
fout << "Apr";
else if (month == 5)
fout << "May";
else if (month == 6)
fout << "Jun";
else if (month == 7)
fout << "Jul";
else if (month == 8)
fout << "Aug";
else if (month == 9)
fout << "Sep";
else if (month == 10)
fout << "Oct";
else if (month == 11)
fout << "Nov";
else if (month == 12)
fout << "Dec";
fout << endl;
}
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