pc17_3.cpp

《c＋＋大学教程实验指导书》源码

// Ch 17 Programming Challenge solution
#include <iostream> 

using std::cout; 

#include "list.h"

// concatenates second List argument to the first
template< class T >
void concatenate( List< T > &first, List< T > &second )
{
   List< T > temp( second ); // create a copy of second 
   
   // variable to store removed item from temp
   T value;              

   while ( !temp.isEmpty() ) {
   
      // remove value from temp list
      temp.removeFromFront( value );
      
      // insert at end of first list  
      first.insertAtBack( value );    

   } // end while

} // end function concatenate

int main()
{
   List< char > list1;
   List< char > list2;
   char c;

   for ( c = 'a'; c <= 'e'; ++c )
      list1.insertAtBack( c );

   list1.print();

   for ( c = 'f'; c <= 'j'; ++c )
      list2.insertAtBack( c );

   list2.print();

   concatenate( list1, list2 );
   cout << "The new list1 after concatenation is:\n";
   list1.print();

   return 0;

} // end main


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