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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <limits>
  4. #include <cmath>
  5.  
  6. template <typename T>
  7. long long fractional(T val)
  8. {
  9.   T frac = val - std::floor(val);
  10.   long long alldigits(std::pow(10, std::numeric_limits<T>::digits10)*frac);
  11.   while (alldigits%10 == 0)
  12.   {
  13.     alldigits /= 10;
  14.   }
  15.   return alldigits;
  16. }
  17.  
  18. int main()
  19. {
  20.   std::cout << fractional<float>(1.0/8.0)  << std::endl; // 125
  21.   std::cout << fractional<float>(1.0/3.0)  << std::endl; // 333333
  22.   std::cout << fractional<double>(1.0/3.0) << std::endl; // 333333333333333
  23.   return 0;
  24. }
  25.  
Success #stdin #stdout 0s 3456KB
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stdin
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Standard input is empty
stdout
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125
333333
333333333333333
https://ideone.com/Z7Hzbl
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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