Functions

void main() {
  // Function call
  welcomeMessage(name: 'Honey', age: 37, address: 'Banshabria');
  welcomeMessage(name: 'Raj', address: 'Bagatipara');
  welcomeMessage(name: 'All Saad', address: 'Natore', age: 5);
  welcomeMessage(name: 'Masum');
   double r = add(12, 10);
  print(r);
}

void welcomeMessage({required String name, String address = '', int age = 0}) {
  // Body
  print('Name: $name');
  print('Address: $address');
  print('Age : $age');
}

// return type
double add(int a, double b) {
  double result = a + b;
  print(result);
  return result;
}