fstream example

sample.cpp

#include <iostream>
#include <fstream>

using namespace std;

struct Data
{
	char name[20];
	int dummy;
};
void Save(Data &sample)
{
	ofstream out;

	out.open("file.txt", ios::out);

	if (!out.is_open()) exit(0);

	out.write(reinterpret_cast<const char*>(&sample), sizeof(Data));

	out.close();
}
void Load(Data &sample)
{
	ifstream in;

	in.open("file.txt", ios::in);

	if (!in.is_open()) exit(0);

	in.read(reinterpret_cast<char*>(&sample), sizeof(Data));

	in.close();
}
int main()
{
	Data Savesample { "Lusain", 1011101 };
	Data Loadsample;

	Save(Savesample);
	Load(Loadsample);

	cout << Loadsample.name << endl;
	cout << Loadsample.dummy << endl;
}