fig19_05.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 60 行

// Fig. 19.5: fig19_05.cpp
// Demonstrating functions related to size and capacity
#include <iostream>

using std::cout;
using std::endl;
using std::cin;

#include <string>

using std::string;

void printStats( const string & );

int main()
{
   string s;
 
   cout << "Stats before input:\n";
   printStats( s );

   cout << "\n\nEnter a string: ";
   cin >> s;  // delimited by whitespace
   cout << "The string entered was: " << s;

   cout << "\nStats after input:\n";
   printStats( s );

   s.resize( s.length() + 10 );
   cout << "\n\nStats after resizing by (length + 10):\n";
   printStats( s );

   cout << endl;
   return 0;
}

void printStats( const string &str )
{
   cout << "capacity: " << str.capacity() 
        << "\nmax size: " << str.max_size()
        << "\nsize: " << str.size()
        << "\nlength: " << str.length()
        << "\nempty: " << ( str.empty() ? "true": "false" );             
}

/**************************************************************************
 * (C) Copyright 2000 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
 *                                                                        *
 * DISCLAIMER: The authors and publisher of this book have used their     *
 * best efforts in preparing the book. These efforts include the          *
 * development, research, and testing of the theories and programs        *
 * to determine their effectiveness. The authors and publisher make       *
 * no warranty of any kind, expressed or implied, with regard to these    *
 * programs or to the documentation contained in these books. The authors *
 * and publisher shall not be liable in any event for incidental or       *
 * consequential damages in connection with, or arising out of, the       *
 * furnishing, performance, or use of these programs.                     *
 *************************************************************************/