程序代码：

#include "stdafx.h"
#include "fstream"
#include "iostream"
using namespace std;
struct student
{
  int no;
  char name[10];
  float score;
};
int main(int argc, char* argv[])
{
    int i;   
    struct student stu[3];
    struct student stu2[3];
    for( i=0;i<3;i++)
    {
        cout<<"请输入第"<<i+1<<"个学生信息:(学号，姓名，分数)"<<endl;
        cin>>stu[i].no>>stu[i].name>>stu[i].score;   
    } 
    ofstream file1;
    ifstream file2;
    file1.open("student.txt",ios::out|ios::app);
    for( i=0;i<3;i++)
    file1.write((char *)&stu[i],sizeof stu[i]);   
    file1.close();
    file2.open("student.txt",ios::in);   
    i=0;
    while((file2.eof())==0)
    {
        file2.read((char *)&stu2[i],sizeof stu2[i]);
        cout<<"学号:"<<stu2[i].no<<"姓名:"<<stu2[i].name<<"分数:"<<stu2[i].score<<endl;
        i++;
    }  
    file2.close();
    return 0;
}