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  1. #include <cmath>
  2. #include <iostream>
  3. #include <iomanip>
  4.  
  5. int main() {
  6.     double x = std::sqrt(7);
  7.     std::cout << x * x << std::endl;
  8.     std::cout << std::setprecision(20);
  9.     std::cout << x * x << std::endl;
  10. }
  11.  
Success #stdin #stdout 0s 4392KB
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Standard input is empty
stdout
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7
7.0000000000000008882
https://ideone.com/ZwNbds
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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