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  1. #include <iostream>
  2. #include <stdexcept>
  3. #include <limits>
  4.  
  5. using namespace std;
  6.  
  7. double _div(double a, double b) throw(underflow_error)
  8. {
  9.     double result = a / b;
  10.     if ( a && result < numeric_limits<double>::min() )
  11.         throw underflow_error("underflow!");
  12.     return result;
  13. }
  14.  
  15. int main()
  16. {
  17.     try {
  18.         double x = _div(numeric_limits<double>::min(), numeric_limits<double>::max());
  19.         cout << x << endl;
  20.     } catch (const exception &e) {
  21.         cout << e.what() << endl;
  22.     }
  23.     try {
  24.         double x = _div(0, 5);
  25.         cout << x << endl;
  26.     } catch (const exception &e) {
  27.         cout << e.what() << endl;
  28.     }
  29.     return 0;
  30. }
  31.  
Success #stdin #stdout 0s 2984KB
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stdin
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Standard input is empty
stdout
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underflow!
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https://ideone.com/JHCe1V
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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