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  1. #include <iostream>
  2. #include <limits>
  3. #include <iomanip>
  4. int main()
  5. {
  6.     long double x = 1.123456789L;
  7.     std::cout << "default precision: "  << x << '\n'
  8.               << "max precision: " << std::setprecision(std::numeric_limits<long double>::digits10) << x << '\n';
  9. }
  10.  
Success #stdin #stdout 0.02s 2724KB
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stdin
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Standard input is empty
stdout
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default precision: 1.12346
max precision: 1.123456789
https://ideone.com/gZo8r
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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