#include
main()
{ int a=30,b=40,c=50,d;
d=a >30?b:c;
switch(d){case a:printf("%d,",a);
case b:printf("%d,",b);
case c:printf("%d,",c);
default:printf("#");}}
A.default:printf("#");这个语句
B.d=a>30?b:c;这个语句
C.case a:printf("%d,",a); case b:printf("%d,",b); case c:printf("%d,",c);这三个语句
D.switch(d)这个语句