les6.dart

import "dart:io";
void main () {
  print ("");
  print ("     #########################");
  print ("      myFirst (+) dart_calcSys");
  print ("     #########################");
  print ("");
  print ("Please...............");
  print ("Enter first_Number = ");
  String? x=stdin.readLineSync(); //nullSafety ? | ~ | ! 
  //print (x);

  print ("++++++++++++++++++++++");
  print ("Enter second_Number = ");
  String? y=stdin.readLineSync(); //nullSafety ? | ~ | ! 
  print ("====================================");
  print ("Total = ");
  //print (y);
  print (double.parse(x!)+double.parse(y!));
  print ("+++++++++++++++++++++++++++++++++++++");
  print ("  Thanks to Use & Share my Projects");
  print ("   by Adel MD |+Cisco CCNA_CCNP_IoE");
  print ("   Full Stack Web & App.Developer");
  print ("+++++++++++++++++++++++++++++++++++++");
  print ("   be free to contact via whatsapp");
  print ("   +967733477848 |!|!| Umbrella Corp.");
  print ("_____________________________________");
  print ("   Good Luck For myFamily++Friends");
  print ("_____________________________________");
  }