Enumeration (C)

#include<stdio.h>
int main()
{
  enum season {spring, summer, autumn, winter} s;
  for(s = spring; s <= winter; s++)
  {
    printf("s is %d\n",s); //Enumeration element is regarded as interger constant.
  }
  return 0;
}

Output:

s is 0
s is 1
s is 2
s is 3