Employee Management System

#include <iostream>
#include <string>
#include <vector>
#include <limits>

using namespace std;

struct Employee {
    int id;
    string name;
    string jobTitle;
    double salary;
};

vector<Employee> employees;

void addNewEmployee() {
    Employee newEmployee;
    cout << "Enter employee ID: ";
    cin >> newEmployee.id;
    cin.ignore(numeric_limits<streamsize>::max(), '\n'); // ignore newline character
    cout << "Enter employee name: ";
    getline(cin, newEmployee.name);
    cout << "Enter job title: ";
    getline(cin, newEmployee.jobTitle);
    cout << "Enter salary: ";
    cin >> newEmployee.salary;
    employees.push_back(newEmployee);
    cout << "Employee added successfully!" << endl;
}

void showAllEmployees() {
    cout << "Employee List:" << endl;
    for (int i = 0; i < employees.size(); i++) {
        cout << "ID: " << employees[i].id << ", Name: " << employees[i].name << ", Job Title: " << employees[i].jobTitle << ", Salary: " << employees[i].salary << endl;
    }
}

double calculatePayroll() {
    double totalPayroll = 0.0;
    for (int i = 0; i < employees.size(); i++) {
        totalPayroll += employees[i].salary;
    }
    return totalPayroll;
}

void generatePayslip() {
    int employeeID;
    cout << "Enter employee ID: ";
    cin >> employeeID;
    for (int i = 0; i < employees.size(); i++) {
        if (employees[i].id == employeeID) {
            cout << "Payslip for Employee " << employees[i].name << endl;
            cout << "Job Title: " << employees[i].jobTitle << endl;
            cout << "Gross Salary: " << employees[i].salary << endl;
            cout << "Net Pay: " << employees[i].salary * 0.8 << endl; // assume 20% tax
            return;
        }
    }
    cout << "Employee not found!" << endl;
}

void generatePayrollReport() {
    double totalPayroll = calculatePayroll();
    cout << "Payroll Report:" << endl;
    cout << "Total Payroll: " << totalPayroll << endl;
    cout << "Average Salary: " << totalPayroll / employees.size() << endl;
}

int main() {
    int choice;
    while (true) {
        cout << "Employee Management System" << endl;
        cout << "1. Add New Employee" << endl;
        cout << "2. Show All Employees" << endl;
        cout << "3. Calculate Payroll" << endl;
        cout << "4. Generate Payslip" << endl;
        cout << "5. Generate Payroll Report" << endl;
        cout << "6. Exit" << endl;
        cout << "Enter your choice: ";
        cin >> choice;
        switch (choice) {
            case 1:
                addNewEmployee();
                break;
            case 2:
                showAllEmployees();
                break;
            case 3:
                cout << "Total Payroll: " << calculatePayroll() << endl;
                break;
            case 4:
                generatePayslip();
                break;
            case 5:
                generatePayrollReport();
                break;
            case 6:
                cout << "Exiting program..." << endl;
                return 0;
            default:
                cout << "Invalid choice. Please try again." << endl;
        }
    }
    return 0;
}