====== C - C++ Files - Structure in a file ======

<code cpp>
#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;
 
struct MyRecord {
  char name[80];
  double balance;
  unsigned long account_num;
};

 
int main()
{
  struct MyRecord acc;
 
  strcpy(acc.name, "R");
  acc.balance = 1.3;
  acc.account_num = 34;
 
  ofstream outbal("balance", ios::out | ios::binary);
  if(!outbal) {
    cout << "Cannot open file.\n";
    return 1;
  }
 
  outbal.write((char *) &acc, sizeof(struct MyRecord));
  outbal.close();
 
  ifstream inbal("balance", ios::in | ios::binary);
  if(!inbal) {
    cout << "Cannot open file.\n";
    return 1;
  }
 
  inbal.read((char *) &acc, sizeof(struct MyRecord));
 
  cout << acc.name << endl;
  cout << "Account # " << acc.account_num;
  cout.precision(2);
  cout.setf(ios::fixed);
  cout << endl << "Balance: $" << acc.balance;
 
  inbal.close();
  return 0;
}
</code>