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  1. #include <iostream>
  2. #include <iomanip>
  3.  
  4. int main()
  5. {
  6.     std::cout << std::setprecision(6) << 40.432f << std::endl;
  7.     std::cout << std::setprecision(7) << 40.432f << std::endl;
  8.     std::cout << std::setprecision(8) << 40.432f << std::endl;
  9.     std::cout << std::setprecision(9) << 40.432f << std::endl;
  10.     std::cout << std::setprecision(16) << 40.432f << std::endl;
  11. }
  12.  
Success #stdin #stdout 0s 4568KB
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stdin
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Standard input is empty
stdout
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40.432
40.432
40.431999
40.4319992
40.43199920654297
https://ideone.com/ZhkPL1
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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