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desislava_topuzakova

10. Invalid Number

Jan 22nd, 2023
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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6. int number;
  7. cin >> number;
  8.  
  9. //валидно: [100…200] или е 0 -> не отпчетваме нищо
  10. //невалидно: отпечатваме "invalid"
  11.  
  12. bool isValid = (number >= 100 && number <= 200) || number == 0;
  13. //isValid = true -> числото е валидно
  14. //isValid = false -> числото е невалидно
  15.  
  16. //ако числото не е валидно -> "invalid"
  17. //!true = false
  18. //!false = true
  19. if (isValid == false) //if (!isValid)
  20. {
  21. cout << "invalid";
  22. }
  23.  
  24. }
  25.  
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