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  1. #include <iostream>
  2. using namespace std;
  3.  
  4.  
  5. template<typename T>
  6. struct identity { typedef T type; };
  7.  
  8. template<typename T>
  9. using identity_t = typename identity<T>::type;
  10.  
  11. template<typename X>
  12. void debugValidateParameter( X aValueToCheck, identity_t<X> aLowerLimit, identity_t<X> aUpperLimit)
  13. {
  14.    if( (aValueToCheck > aUpperLimit) || (aValueToCheck < aLowerLimit) )
  15.    {
  16.       cout << "ERROR: ValidateParameters, aValueToCheck = " << aValueToCheck << ", aLowerLimit= " << aLowerLimit << " , aUpperLimit= " << aUpperLimit << endl;
  17.       //throw(std::out_of_range("Invalid Range"));
  18.    }
  19. }
  20.  
  21.  
  22. int main() {
  23. 	unsigned int a = 50;
  24. 	debugValidateParameter(a, 0, 100);
  25. 	debugValidateParameter(a, -100, 100); // Validation will fail UNINTENTIONALLY, since -100 is implicitly converted to unsigned int which becomes a very large positive value
  26.  
  27. 	int b = -50;
  28. 	debugValidateParameter(b, 0, 100);
  29. 	debugValidateParameter(b, -100, 100); // Validation will fail intentionally
  30. }
Success #stdin #stdout 0s 3468KB
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stdin
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Standard input is empty
stdout
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ERROR: ValidateParameters, aValueToCheck = 50, aLowerLimit= 4294967196 , aUpperLimit= 100
ERROR: ValidateParameters, aValueToCheck = -50, aLowerLimit= 0 , aUpperLimit= 100
https://ideone.com/T5z6b9
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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