File Handling Read and Write Binary Data

 #include <iostream>

#include <fstream>
#include <string>
using namespace std;

struct  MyStruct
{
    int a;//2
    float b;//4
    double c;//8
}obj;

int main() {


    obj.a = 10;
    obj.b = 30;
    obj.c = 4000;

    ofstream file("abc.txt", ios::binary | ios::out);

    if (file.is_open()) {
        file.write(reinterpret_cast<char*>(&obj), sizeof(obj));
        file.close();
        cout << "File Create Sucess.";
    }

    //=============Read===========


    ifstream file_read("abc.txt", ios::binary | ios::out);

    if (file_read.is_open()) {
        file_read.read(reinterpret_cast<char*>(&obj), sizeof(obj));
        file_read.close();
        cout << "File Read Sucess.";
    }


    cout << "A=" << obj.a << endl;
    cout << "C=" << obj.b << endl;
    cout << "B=" << obj.c << endl;


    return 0;
}