typedef struct pif
{
char name[20];
char num[12];
char qq[15];
char email[20];
}bs;
typedef struct pbs
{
bs data;
struct pbs *next;
}*ptbs;
ptbs head=(struct pbs*)malloc(sizeof(pbs)); //显示此处错误
error : 'pbs' undeclared here ( not in a function )
我已经定义了pbs,为什么此处还是显示未声明?