显示数据二进制形式

 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     string name;
 8     int num;
 9     int age;
10     char sex;
11 };
12 int main(int argc, char** argv) {
13     student stud[3];
14     int i;
15     ifstream infile("stud.dat",ios::binary);
16     if(!infile)
17     {
18         cerr<<"open error!"<<endl;
19         abort();
20     }
21     for(i=0;i<3;i++)
22     infile.read((char*)&stud[i],sizeof(stud[i]));
23     infile.close();
24     for(i=0;i<3;i++)
25     {
26         cout<<"NO."<<i+1<<endl;
27         cout<<"name:"<<stud[i].name<<endl;
28         cout<<"num:"<<stud[i].num<<endl;
29         cout<<"age:"<<stud[i].age<<endl;
30         cout<<"sex:"<<stud[i].sex<<endl;
31     }
32     return 0;
33 }