Displaying floating-point values in system default, scientific and fixed formats : cout float « Development « C++ Tutorial

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C++ Tutorial » Development » cout float

5.6.1.Displaying floating-point values in system default, scientific and fixed formats

#include <iostream>

using std::cout;

using std::endl;

using std::fixed;

using std::scientific;



int main()

{

   double x = 0.001234567;

   double y = 1.946e9;



   cout << "Displayed in default format:" << endl << x << '\t' << y << endl;



   cout << "\nDisplayed in scientific format:" << endl << scientific << x << '\t' << y << endl;



   cout << "\nDisplayed in fixed format:" << endl << fixed << x << '\t' << y << endl;

   return 0;

}

Displayed in default format:
0.00123457      1.946e+009

Displayed in scientific format:
1.234567e-003   1.946000e+009

Displayed in fixed format:
0.001235        1946000000.000000

5.6.cout float
	5.6.1.	Displaying floating-point values in system default, scientific and fixed formats
	5.6.2.	ios::right\|ios::scientific\|ios::showpoint
	5.6.3.	Displaying numbers in scientific notation
	5.6.4.	Normal (default) mode; only show 5 digits, including both sides of decimal point
	5.6.5.	Controlling precision of floating-point values

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