fig26_13.cpp

C程序设计经典教程第5版程序示例,比较适合初级c语言的学生

// Fig. 26.13: Fig26_13.cpp 
// Using showpoint to control the printing of 
// trailing zeros and decimal points for doubles.
#include <iostream>
using std::cout;
using std::endl;
using std::showpoint;

int main()
{
   // display double values with default stream format
   cout << "Before using showpoint" << endl
      << "9.9900 prints as: " << 9.9900 << endl
      << "9.9000 prints as: " << 9.9000 << endl
      << "9.0000 prints as: " << 9.0000 << endl << endl;

   // display double value after showpoint
   cout << showpoint  
      << "After using showpoint" << endl
      << "9.9900 prints as: " << 9.9900 << endl
      << "9.9000 prints as: " << 9.9000 << endl
      << "9.0000 prints as: " << 9.0000 << endl;
   return 0;
} // end main

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