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  • Ankita Katdare

    Administrator • Aug 10, 2011

    @Nikumbh: Sure. What do you want to know about it?
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  • Nikumbh

    Member • Aug 10, 2011

    AbraKaDabra
    @Nikumbh: Sure. What do you want to know about it?
    I want to know what is the use of enumeration tag.
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  • Nikumbh

    Member • Aug 10, 2011

    I want to know the use of enum data type
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  • Ankita Katdare

    Administrator • Aug 10, 2011

    Very well, 'Enum' data type variables takes values which have been previously declared.
    With an Enum, you can specify a number of valid values for that variable and descriptive constant names for the values of the Enum. These values are used instead of constants.

    In C:

    For example:

    enum month 
{ 
jan=1, feb=2, mar=3, apr=4, may=5, jun=6, jul=7, aug=8, sep=9, oct=10, nov=11, dec=12
};     
enum month this_month;      

this_month = aug;
    Here 'month' is declared as the enumerated data type.
    It consists of a set of values, jan to dec. Numerically, jan is given the value 1, feb the value 2, and so on.
    The variable 'this_month' is declared to be of the same type as 'month'.
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  • Nikumbh

    Member • Aug 14, 2011

    Is that necessary to have enum data type....?
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  • ayusha patnaik

    Member • Aug 15, 2011

    can any one suggest me a good and easy book for object oriented programming for c++?
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  • TheV

    Member • Aug 15, 2011

    I am explain a little more..

    When we write a number of related constant with sequencial values like I want to assign names of the color(red,green,yellow,white,black,blue,orange) with 1 to 7 then instead of writing ..

    int red=1;
    int green =2;
    int yellow =3;
    ........
    ........
    int orange = 7;
    we write ....

    enum color{
    red,green,yellow,white,black,blue,orange
    };
    here we didnot initialize any color with any number. It is automatically initialize from 0 to 6. But we want to initialize from 1 to 7 so we just initialize
    the first color i.e. red to 1 and the remaining automatically initializes from 2 to 7 . As..
    enum color{
    red=1,green,yellow,white,black,blue,orange
    };
    Again explaining little more...if we initialize green to 1 ie green =1 then the remaining 5 color will have 2 to 6
    eg-

    #include<stdio.h>
#include<conio.h>
main()
{
enum color{
red=1,green=1,yellow,white,black,blue,orange
};
enum color mycolor = white;
printf("%d",mycolor);
printf("%d%d",red,orange);  //We can also print by their name .
getch();
return;
}
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