Program based on Enumeration (or enum) in C

1. Two enum names can have same value. For example, in the following C program both ‘Failed’ and ‘Freezed’ have same value 0.

#include <stdio.h>

enum State {Working = 1, Failed = 0, Freezed = 0};

 

int main()

{

   printf("%d, %d, %d", Working, Failed, Freezed);

   return 0;

}

 

2. If we do not explicitly assign values to enum names, the compiler by default assigns values starting from 0. For example, in the following C program, sunday gets value 0, monday gets 1, and so on.

#include <stdio.h>

enum day {sunday, monday, tuesday, wednesday, thursday, friday, saturday};

 

int main()

{

    enum day d = thursday;

    printf("The day number stored in d is %d", d);

    return 0;

}

 

3. We can assign values to some name in any order. All unassigned names get value as value of previous name plus one.

#include <stdio.h>

enum day {sunday = 1, monday, tuesday = 5,

          wednesday, thursday = 10, friday, saturday};

 

int main()

{

    printf("%d %d %d %d %d %d %d", sunday, monday, tuesday,

            wednesday, thursday, friday, saturday);

    return 0;

}