desislava_topuzakova

10. Invalid Number

Oct 14th, 2023
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  1. int number = int.Parse(Console.ReadLine());
  2.  
  3. //валидно: [100; 200] или е 0 -> нищо
  4. //невалидно -> invalid
  5.  
  6. bool isValid = (number >= 100 && number <= 200) || number == 0;
  7. //true -> числото валидно
  8. //!true -> false
  9.  
  10. //false -> числото не е валидно
  11. //!false = true
  12.  
  13. if (!isValid)
  14. {
  15. Console.WriteLine("invalid");
  16. }
  17.  
  18.  
  19.  
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