fig11_26.cpp

来自「这是C＋＋编程经典的书上实例的源代码。 （英文名是《C＋＋ how to pr」· C++ 代码 · 共 45 行

// Fig. 11.26: fig11_26.cpp 
// Displaying floating-point values in system default,
// scientific, and fixed formats.
#include <iostream>

using std::cout;
using std::endl;
using std::ios;

int main()
{
   double x = .001234567, y = 1.946e9;

   cout << "Displayed in default format:\n"
        << x << '\t' << y << '\n';
   cout.setf( ios::scientific, ios::floatfield );
   cout << "Displayed in scientific format:\n"
        << x << '\t' << y << '\n';
   cout.unsetf( ios::scientific );
   cout << "Displayed in default format after unsetf:\n" 
        << x << '\t' << y << '\n';
   cout.setf( ios::fixed, ios::floatfield );
   cout << "Displayed in fixed format:\n"
        << x << '\t' << y << endl;
   return 0;
}




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