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  1. #include <iostream>
  2. #include <iomanip>
  3. using namespace std;
  4.  
  5. int main() {
  6.  
  7. 	std::cout << std::setprecision(5) << 123.4567890123456789 << '\n';
  8. 	std::cout << std::setprecision(10) << 123.4567890123456789 << '\n';
  9. 	std::cout << std::setprecision(20) << 123.4567890123456789 << '\n';
  10. 	std::cout << std::setprecision(20) << 123.45678 << '\n';
  11.  
  12. 	return 0;
  13. }
Success #stdin #stdout 0s 3460KB
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stdin
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Standard input is empty
stdout
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123.46
123.456789
123.45678901234568059
123.45677999999999486
https://ideone.com/Lu9w9o
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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