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Saturday, April 25, 2020

How to format double as integer and not use scientific notation


Here's how to format double as integer and not use scientific notation. See last line in code example below.

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// setprecision example
#include <iostream>     // std::cout, std::fixed
#include <iomanip>      // std::setprecision
#include <string>
int main () {
  double f =79324623498343.12323;
  std::cout << std::setprecision(5) << f << '\n';
  std::cout << std::setprecision(9) << f << '\n';
  std::cout << std::fixed;
  std::cout << std::setprecision(5) << f << '\n';
  std::cout << std::fixed << std::setprecision(0) << f << '\n';
  return 0;
}

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