对二进制文件的操作

#include<iostream>

using namespace std;
int main()
{
 FILE *fp;
 char name[20];
 int num;
 float score;
 if((fp=fopen("ok.txt","w"))==NULL)
 {
  printf("can not open file");
  exit(0);
 }
cout<<"type name,num,score:";
 cin>>name>>num>>score;

 while(strlen(name)>1)
 {
  fprintf(fp,"  %s  %d  %f",name,num,score);
 cout<<"type name,num,score:";
  cin>>name>>num>>score;
 }
 fclose(fp);
 return 0;
}