Enum in C

Enum stands for enumeration which is a user defined type in C. It is used to assign names to integral constants which makes a program easy to read.

Example

enum status = {Present = 0, Absent = 1};

The enumeration starts with the keyword enum, then we will assign an integer to the value. If no value is assigned then the default integer starts with 0 and incremented by 1 for subsequent values.

Example

enum weekdays {
    Sunday = 0,
    Monday = 1,
    Tuesday = 2,
    Wednesday = 3,
	Thursday = 4,
	Friday = 5,
	Saturday = 6
};

Example Program

#include<stdio.h>
  
enum weekdays {
    Sunday = 0,
    Monday = 1,
    Tuesday = 2,
    Wednesday = 3,
	Thursday = 4,
	Friday = 5,
	Saturday = 6
};
  
int main()
{
    enum weekdays day;
    day = Monday;
    printf("%d",day);
    return 0;
}

Output

1