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  1. #include <iostream>
  2.  
  3. int main()
  4. {
  5. 	int L = 0;
  6. 	int R = 101;
  7. 	char spell = true;
  8. 	std::cout << "Is the number you thought of larger than (please, input 'y', 'n' or '=') " << 50 << "? ";
  9. 	while (std::cin >> spell)
  10. 	{
  11. 		if (spell != 'y' && spell != 'n' && spell != '=')
  12. 		{
  13. 			std::cout << "Please, input 'y', 'n' or '=': " << std::endl;
  14. 			continue;
  15. 		}
  16.  
  17. 		int M = (L + R) / 2;
  18.  
  19. 		if (spell == '=')
  20. 		{
  21. 			std::cout << "The number you thought of is " << M << "!" << std::endl;
  22. 			break;
  23. 		}
  24.  
  25. 		switch (spell)
  26. 		{
  27. 			case 'y':
  28. 			{
  29. 				L = M;
  30. 				break;
  31. 			}
  32. 			case 'n':
  33. 			{
  34. 				R = M;
  35. 				break;
  36. 			}
  37. 		}
  38.  
  39. 		M = (L + R) / 2;
  40.  
  41. 		std::cout << "Is the number you thought of larger than " << M << "? ";
  42. 	}
  43. }
Success #stdin #stdout 0s 3464KB
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Standard input is empty
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Is the number you thought of larger than (please, input 'y', 'n' or '=') 50?
https://ideone.com/Y17Y1X
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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