What is the use of enum in c language?

Answer 1

It allows you to create your own names for integer data. They can be used anywhere an integer can be used.

enum direction {north, east, south, west};
int d = north;
printf("%d\n", d);

outputs 0

They can be assigned exact values instead of sequential ones.

enum data {one = 1, zero = 0, ten = 10};