fig15_13.cpp

来自「是有关C++编程原理教程的例子程序,全,应该对大家有所帮助」· C++ 代码 · 共 40 行

// Fig. 15.13: Fig15_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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