采用binary形式对数据结构进行读写

//采用binary形式对结构数据进行读写 #include <fstream>#include <iostream>using namespace std;//定义数据结构struct person{ char name[20]; int age; float score;}ss; //定义用于显示数据的函数void show(struct person s){ cout<<s.name<<" "<<s.age<<" "<<s.score<<endl;}int main(){ int n; cout<<"n=?"<<endl; cin>>n; //打开文件，指针指到文件尾 ofstream fout("f01.bin",ios::binary|ios::app); for(int i=0;i<n;i++){ cout<<"name,age,score=?"<<endl; cin>>ss.name>>ss.age>>ss.score; //写入数据 fout.write((char*)(&ss), sizeof(ss)); } fout.close(); //使用read读入 ifstream fin("f01.bin",ios::binary); fin.read((char*)(&ss), sizeof(ss)); while(!fin.eof()){ show(ss); fin.read((char*)(&ss), sizeof(ss)); } fin.close(); return 0;}