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  1. // setprecision example
  2. #include <iostream>     // std::cout, std::fixed
  3. #include <iomanip>      // std::setprecision
  4.  
  5. int main () {
  6.     int precision = 2;
  7.   double f =3.14159;
  8.  
  9.   std::cout << std::setprecision(precision) << f << '\n';
  10.   ++precision;
  11.   std::cout << std::setprecision(precision) << f << '\n';
  12.  
  13.   return 0;
  14. }
Success #stdin #stdout 0s 3340KB
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stdin 
Standard input is empty
stdout 
3.1
3.14
https://ideone.com/Ouh8Q7
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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