main.dart

void main() {
  String operation = "+";
  int num1 = 5;
  int num2 = 10;
  
  switch(operation)
  {
    case '+':
      int result  = num1 + num2;
      if(result == 38)
        print('This is special number');
      else
        print('This is normal number');
      break;
    default:
      print('invalid operation');
  }
}