int len = strlen(s),如果s=‛hell‛,則 len =()
A.4 B.5 C.s的首地址 D.0
typedef struct{ int num; char *name; } *vec_ptr; 則在IA32機器上,sizeof(vec_ptr) =()
A.4 B.8 C.12 D.16
typedef struct{ int num; char *name; } vec_rec; 則在IA32機器上,sizeof(vec_rec) = ()