Create Student Record File

#include <iostream>
#include <fstream>

using namespace std;

// Define the structure
struct Student {
    int rno;
    char name[30];
    int marks;
};

int main() {
    
	Student srec;
	// Create a binary file for writing
    fstream file1("d://file.dat", ios::binary | ios::app);
    if (!file1) {
        cout << "Error: Unable to open file." << endl;
        return 1;
    }

    char choice = 'y';
    while (choice == 'y') {
        // Input student record
        cout << "Enter Roll Number: ";
        cin >> srec.rno;
        cin.ignore(); // Ignore newline character left in the input buffer
        cout << "Enter Name: ";
        cin.getline(srec.name, 30);
        cout << "Enter Marks: ";
        cin >> srec.marks;

        // Write the record into the file
        file1.write((char*)&srec, sizeof(srec));

        cout << "Do you want to add more records? (y/n): ";
        cin >> choice;
    }

    // Close the file
    file1.close();

    return 0;
}