fig21_23.cpp

《c＋＋大学教程》源码

// Fig. 21.23: fig21_23.cpp
// Standard library adapter stack test program.
#include <iostream>

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

#include <stack>   // stack adapter definition
#include <vector>  // vector class-template definition
#include <list>    // list class-template definition

// popElements function-template prototype 
template< class T >
void popElements( T &stackRef );

int main()
{
   // stack with default underlying deque
   std::stack< int > intDequeStack;   

   // stack with underlying vector
   std::stack< int, std::vector< int > > intVectorStack;

   // stack with underlying list
   std::stack< int, std::list< int > > intListStack;

   // push the values 0-9 onto each stack 
   for ( int i = 0; i < 10; ++i ) {
      intDequeStack.push( i );
      intVectorStack.push( i );
      intListStack.push( i );

   } // end for

   // display and remove elements from each stack
   cout << "Popping from intDequeStack: ";
   popElements( intDequeStack );
   cout << "\nPopping from intVectorStack: ";
   popElements( intVectorStack );
   cout << "\nPopping from intListStack: ";
   popElements( intListStack );

   cout << endl;

   return 0;

} // end main

// pop elements from stack object to which stackRef refers
template< class T >
void popElements( T &stackRef )
{
   while ( !stackRef.empty() ) {
      cout << stackRef.top() << ' ';  // view top element
      stackRef.pop();                 // remove top element

   } // end while

} // end function popElements

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 * (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice      *
 * Hall. All Rights Reserved.                                             *
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