c++结构体定义问题,求大神指点菜鸟

struct PortSettings myComsetting //错误skip identifier 'Portsettings'
{
BAUD9600,DATA_8,PAR_NONE,STOP_1,FLOW_OFF,500//expected a declaration
};

typedef struct PortSettings
{
BAUD9600,DATA_8,PAR_NONE,STOP_1,FLOW_OFF,500//expected a declaration
}myComsetting;

看看这个例子： #include <iostream> using namespace std; struct student{     int num;     char name[20]; }; int main() {     student s,*p;         cin>>s.num>>s.name;     cout<<"num="<<s.num<<",name="<<s.name<<endl;         p=new(student);     cin>>p->num>>p->name;     cout<<"num="<<p->num<<",name="<<p->name<<endl;     delete p;         return 0; }

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