data

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

struct Student {
    int id;
    string name;
    int age;
};

void addRecord(const Student& student) {
    ofstream file("students.txt", ios::app);
    if (file.is_open()) {
        file << student.id << " " << student.name << " " << student.age << endl;
        file.close();
        cout << "Record added successfully." << endl;
    } else {
        cout << "Unable to open file." << endl;
    }
}

void searchRecord(int id) {
    ifstream file("students.txt");
    if (file.is_open()) {
        int studentId;
        string name;
        int age;
        bool found = false;
        while (file >> studentId >> name >> age) {
            if (studentId == id) {
                found = true;
                cout << "Student ID: " << studentId << ", Name: " << name << ", Age: " << age << endl;
                break;
            }
        }
        if (!found) {
            cout << "Record not found." << endl;
        }
        file.close();
    } else {
        cout << "Unable to open file." << endl;
    }
}

void displayAllRecords() {
    ifstream file("students.txt");
    if (file.is_open()) {
        int studentId;
        string name;
        int age;
        while (file >> studentId >> name >> age) {
            cout << "Student ID: " << studentId << ", Name: " << name << ", Age: " << age << endl;
        }
        file.close();
    } else {
        cout << "Unable to open file." << endl;
    }
}

int main() {
    int choice;
    Student newStudent;

    do {
        cout << "\nDatabase Menu\n";
        cout << "1. Add Record\n";
        cout << "2. Search Record\n";
        cout << "3. Display All Records\n";
        cout << "4. Exit\n";
        cout << "Enter your choice: ";
        cin >> choice;

        switch (choice) {
            case 1:
                cout << "Enter student ID: ";
                cin >> newStudent.id;
                cout << "Enter student name: ";
                cin.ignore();
                getline(cin, newStudent.name);
                cout << "Enter student age: ";
                cin >> newStudent.age;
                addRecord(newStudent);
                break;
            case 2:
                int searchId;
                cout << "Enter student ID to search: ";
                cin >> searchId;
                searchRecord(searchId);
                break;
            case 3:
                cout << "All Records:" << endl;
                displayAllRecords();
                break;
            case 4:
                cout << "Exiting program." << endl;
                break;
            default:
                cout << "Invalid choice. Please try again." << endl;
        }
    } while (choice != 4);

    return 0;
}