#include<stdio.h>
enum?Season
{
????spring,?summer=100,?fall=96,?winter
};
typedef?enum
{
????Monday,?Tuesday,?Wednesday,?Thursday,?Friday,?Saturday,?Sunday
}
Weekday;
void?main()
{
????/*?Season?*/
????printf("%d?/n",?spring);?//?0
????printf("%d,?%c?/n",?summer,?summer);?//?100,?d
????printf("%d?/n",?fall+winter);?//?193
????Season?mySeason=winter;
?if(winter==mySeason)
????????printf("mySeason?is?winter?/n");?//?mySeason?is?winter
????
????int?x=100;
????if(x==summer)
????????printf("x?is?equal?to?summer/n");?//?x?is?equal?to?summer
????printf("%d?bytes/n",?sizeof(spring));?//?4?bytes
????/*?Weekday?*/
????printf("sizeof?Weekday?is:?%d?/n",?sizeof(Weekday));?//sizeof?Weekday?is:?4
????Weekday?today?=?Saturday;
????Weekday?tomorrow;
????if(today?==?Monday)
????????tomorrow?=?Tuesday;
????else
????????tomorrow?=?(Weekday)?(today?+?1);?//remember?to?convert?from?int?to?Weekday
}