#include
using namespace std;
struct student
{char name[20];
int num;
int age;
char sex;
};
int main()
{student stud[3]={"Li",1001,18,'f',"Fang",1002,19,'m',"Wang",1004,17,'f'};
ofstream outfile("stud.dat",ios::binary);
if(!outfile)
{cerr<<"open error!"<<endl;
abort();
}
for(int i=0;i<3;i++)
outfile.write((char*)&stud[i],sizeof(stud[i]));
outfile,close();
return 0;
}