dart_flutter_comments_dartypes_b1

void main() {
  print('My first Dart App');

  // int, double, String, bool

  // variable name should not start with 0 - 9
  // variable name should not start with special characters (_,$)
  // vriable should not be a keyboard
  // case sensitive

  // comments
  // 1) to understand
  // 2) to prevent the code compilation

  /**
   * sasa
   * sa
   * sa
   * s
   * as
   * a
   * sa
   * s\sasa
   *
   * sasa
   */

  double price = 89.78;
  String name = "Dart Classes";
  String myDetails = """adadnanjknalfnafnn kdnklalknfanlfamdma
  sasas
  asasa
  s""";
  String collegeName = 'VITS';
  bool isAvaible = true;
  bool isNotAvaible = false;

  // datatype variableName = value;

  int Age = 30;

  var role = "Sr Software Developer";
  var salary = true;

  final myAge = 25; // final = var + final
  print("before $myAge");
  // myAge = 37;
  // print("after $myAge");
  // myAge = 89;
  // print("after $myAge");

  bool myGroup; // false

  // default value is null for every data type

  print(myGroup);

  // print("My age is $age and\n college is $collegeName");
  // print("college is $myDetails");
}