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//Listing 14.05 Writing a Struct to a Binary File
#include <fstream>
#include <iostream>
#include <cassert> // assert()
using namespace std;
typedef struct {
int x;
int y;
} Vector;
int main() {
char fileName[80] = "";
cout << "Please enter the file name: ";
cin >> fileName;
ofstream fout(fileName, ios::binary); // establish connection,
assert( fout.is_open() ); // and check for success
Vector v = {5,12};
fout.write(reinterpret_cast<char*>(&v), sizeof v);
fout.close();
ifstream fin(fileName, ios::binary); // establish connection,
assert( fin.is_open() ); // and check for success
Vector v2 = {3,4};
cout << "v2.x\t:\t" << v2.x << endl;
cout << "v2.y\t:\t" << v2.y << endl;
fin.read(reinterpret_cast<char*>(&v2), sizeof v2);
cout << "v2.x\t:\t" << v2.x << endl;
cout << "v2.y\t:\t" << v2.y << endl;
fin.close();
return 0;
}
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