Set the precision to 9 : double output « Data Type « C++

1. C++
2. Data Type
3. double output

Set the precision to 9

  
#include <iostream>

using namespace std;

int main()
{
  double f = 123456.123456789;

  cout << "Using default numeric format.\n";
  cout << "f with default precision: " << f << "\n\n";

  cout << "Setting the precision to 9.\n";
  cout.precision(9);
  cout << "f with precision of 9: " << f << "\n\n";

  cout << "Switching to fixed-point format.\n";
  cout.setf(ios::fixed, ios::floatfield);

  cout << "f with precision of 9 in fixed-point: " << f << "\n\n";

  // Now, display two decimal places.
  cout << "Display two decimal places in all cases: ";
  cout.precision(2);
  cout << 12.456 << " " << 10.0 << " " << 19.1 << endl;

  return 0;
}
  
    
  

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