以下程序的输出结果是 ( )
enum weekday sun=7,mon=1,tue,wed,thu,fri,sat;
main( )
enum weekday workday,week_end;
int i,a [8];
workday=tue;
week end=sun;
pritnf("\ntuesday=%d sunday=%d", wotkday, week_end);
workday=sun+tue;
week_end=(enum weekday)3;
printf ("tuesday=%d sunday=%d", workday week_end);
a[sun]=sun;
a[mon]=mon
a[tue]=tue;
a[wed]=wed;
a[thu]=thu;
a[fri]=fr;
a[sat]=sat;
for(i=1;i<7;i+ +) printf("%d",a [i]);
A.tuesday=2 sunday=7;tuesday=2 sunday=7;1 2 3 4 5 6 7
B.tuesday=2 sunday=7;tuesday=9 sunday=3;1 2 3 4 5 6 7
C.tuesday=0 sunday=7;tuesday=2 sunday=3;1 2 3 4 5 6 7
D.tuesday=1 sunday=2;tuesday=3 sunday=4;1 2 3 4 5 6 7