#include <fstream>
 #include <iostream> 
using namespace std; 
int main () { 
char data[100]; 
// mo mot file trong che do write. ofstream outfile;
 outfile.open("qtm.dat"); 
cout << "Ghi du lieu toi file!" << endl;
 cout << "Nhap ten cua ban: "; 
cin.getline(data, 100); // ghi du lieu da nhap vao trong file. 
outfile << data << endl; 
cout << "Nhap tuoi cua ban: "; 
cin >> data; 
cin.ignore(); 
// ghi du lieu da nhap vao trong file.
 outfile << data << endl; // dong file da mo. 
outfile.close(); 
// mo mot file trong che do read. 
ifstream infile;
 infile.open("qtm.dat");
 cout << "\n===========================\n" ;
 cout << "Doc du lieu co trong file!" << endl; 
infile >> data; 
// ghi du lieu tren man hinh. 
cout << data << endl;
 // tiep tuc doc va hien thi du lieu. 
infile >> data; cout << data << endl;
 // dong file da mo. 
infile.close();
 return 0; }