Controlling the printing of trailing zeros and decimal points for floating-point values. : float output « Data Types « C++ Tutorial

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C++ Tutorial » Data Types » float output

2.11.3.Controlling the printing of trailing zeros and decimal points for floating-point values.

#include <iostream>

#include <iomanip>

#include <cmath>



using std::cout;

using std::endl;

using std::ios;



int main()

{      

   cout << "Before setting the ios::showpoint flag\n"

        << "9.9900 prints as: " << 9.9900 

        << "\n9.9000 prints as: " << 9.9000

        << "\n9.0000 prints as: " << 9.0000

        << "\n\nAfter setting the ios::showpoint flag\n";

   cout.setf( ios::showpoint );

   cout << "9.9900 prints as: " << 9.9900 

        << "\n9.9000 prints as: " << 9.9000

        << "\n9.0000 prints as: " << 9.0000 << endl;

   return 0;

}

2.11.float output
	2.11.1.	Set precision for float number output
	2.11.2.	Set and clear the showpoint flag
	2.11.3.	Controlling the printing of trailing zeros and decimal points for floating-point values.
	2.11.4.	Read and output float
	2.11.5.	pad the field width with spaces and set the internal and showpos flags

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