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  1. #include <iostream>
  2. #include <iomanip>
  3.  
  4. int main(int argc, char *argv[]) {
  5.     // double/float, rounding errors do not cancel out
  6.     std::cout << "double/float: " << std::setprecision(20) << 3.5 / 0.1f << std::endl;
  7.     // double/double, rounding errors cancel out
  8.     std::cout << "double/double: " << std::setprecision(20) << 3.5 / 0.1 << std::endl;
  9.     return 0;
  10. }
Success #stdin #stdout 0s 2896KB
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Standard input is empty
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double/float: 34.999999478459365321
double/double: 35
https://ideone.com/fTNVho
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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