将一批数据以二进制形式存放在磁盘文件中

 1 #include <iostream>
 2 #include <fstream>
 3 /* run this program using the console pauser or add your own getch, system("pause") or input loop */
 4 using namespace std;
 5 struct student
 6 {
 7     char name[20];
 8     int num;
 9     int age;
10     char sex;
11 };
12 int main(int argc, char** argv) {
13     student stud[3]={"li",1001,18,'f',"Fun",1002,19,'m',"wang",1004,17,'f'};
14     ofstream outfile("stud.dat",ios::binary);
15     if(!outfile)
16     {
17         cerr<<"open error!"<<endl;
18         abort();
19     }
20     for(int i=0;i<3;i++)
21     outfile.write((char*)&stud[i],sizeof(stud[i]));
22     outfile.close();
23     return 0;
24 }