From a student of Sir Syed University of Engineering and Technology

1. Topic:
“EnumerationType”

2.  You have an array that stores your grades like:
int Grade[5];
 Now, you need to assign the grades of your subjects like:
(Math, English, Biology, Chemistry, History)
to your array.
 So, in Math you have a grade 1
Grade[0] = 1; // Math --> 1
for English you have a grade 3
Grade[1] = 3; // English --> 3
 Later in your code, you want to retrieve the grade of English. For that you will
have to remember that in your Grade[ ] array the second entry [1] would be
English.
WITH ENUMERATION WE CAN DO IT IN AN EASY WAY.

3.  First we are gonna know the meaning of the
the word enumeration, generally.
“It is the action of mentioning a number of things
one by one”
 In C++, enumeration means,
“An Enumeration is user-defined data type that
consists of Integral constants”
 ‘enum’ keyword is used to define and
enumeration.

4. enum season { spring, summer, autumn, winter };
 Here, the name of the enumeration is season.
 And, spring, summer and winter are values
of type season.
 By default, spring is 0, summer is 1 and so on.
You can change the default value of an enum
element during declaration

5. SYNTAX:
enum subject {
Math,
English,
Biology,
Chemistry,
History
};
 Now every subject in the brackets will get their index number,
without us to mention like,
Math = 0
English=1
Biology=2 //Which makes the Grade[5], in total.
Chemistry =3
History= 4

6.  The expression Grade[0] is the same as
Grade[math]
Grade[0] = 1; // Math --> 1
 You do not need to know which subject
has which index any more, you simply call
them by their name.

7. SOURCE CODE:
#include <iostream>
using namespace std;
enum week {
Monday,
Tuesday, FOR INSTANCE:
Wednesday, If I initialize only Monday as to (Monday=1)
Thursday , then?
Friday,
Saturday,
Sunday };
int main()
{
week today;
today = Monday;
cout << "Day: " << today +1;
return 0;
}

8. #include<iostream>
using namespace std;
enum suit{
spade, SPADE HEART
club,
heart,
diamond
};
int main()
{
suit mycard;
suit hercard;
mycard= club; DIAMOND CLUB
hercard= heart;
if(mycard>hercard)
{
cout<<"You win!"<<endl;
}else
{
cout<<"You lose!"<<endl;
}
return 0;
}

9. Cout<<“THANKYOU”;