main.dart

class Employee {
  String? name;
  int? age;
  String? department;
  double? salary;

  // Constructor
  Employee(String name, int age, String department, double salary) {
    this.name = name;
    this.age = age;
    this.department = department;
    this.salary = salary;
  }

  // Method to display employee details
  void display() {
    print("Name: ${this.name}");
    print("Age: ${this.age}");
    print("Department: ${this.department}");
    print("Salary: ${this.salary}\n");
  }

  // Method to give an annual raise
  void giveRaise(double percentage) {
    double raiseAmount = this.salary! * (percentage / 100);
    this.salary = this.salary! + raiseAmount;
  }
}

void main() {
  // Creating an employee object of class Employee
  Employee employee1 = Employee("Alice", 28, "HR", 45000.0);
  employee1.display();

  // Applying an annual raise
  employee1.giveRaise(5); // Giving a 5% raise
  employee1.display();

  // Creating another employee object
  Employee employee2 = Employee("Bob", 32, "Engineering", 60000.0);
  employee2.display();

  // Applying an annual raise
  employee2.giveRaise(7); // Giving a 7% raise
  employee2.display();
}