// Fig. 16.1: fig16_01.cpp
// Demonstrating string assignment and concatenation.
#include <iostream>
#include <string>
using namespace std;


int main()
{
   string string1( "cat" );
   string string2;
   string string3;

   string2 = string1;          // assign string1 to string2
   string3.assign( string1 );  // assign string1 to string3
   cout << "string1: " << string1 << endl << "string2: " << string2
        << endl << "string3: " << string3 << endl << endl;

   // modify string2 and string3 
   string2[ 0 ] = string3[ 2 ] = 'r';

   cout << "After modification of string2 and string3:" << endl
        << "string1: " << string1 << endl << "string2: " << string2
        << endl << "string3: ";

   // demonstrating member function at
   for ( int i = 0; i < string3.length(); i++ ) 
      cout << string3.at( i );

   // declare string4 and string5
   string string4( string1 + "apult" );
   string string5;

   // overloaded +=
   string3 += "pet";           // create "carpet"
   string1.append( "acomb" );  // create "catacomb"

   // append subscript locations 4 through end of string1 to
   // create string "comb" (string5 was initially empty)
   string5.append( string1, 4, string1.length() );
                                 
   cout << endl << endl << "After concatenation:\nstring1: " << string1 
        << endl << "string2: " << string2 << endl << "string3: " 
        << string3 << endl << "string4: " << string4
        << endl << "string5: " << string5 << endl;
   
   return 0;

}  // end main

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