输入输出--write

#include <fstream>
using namespace std;

struct Date {
	int mondy, day, year;
};

int main() {
	Date dt = {7, 27, 93};

	ofstream file("date.dat", ios_base::binary);
	file.write(reinterpret_cast<char*>(&dt), sizeof(dt));
	file.close();

	return 0;
}