// Fig. 18.1: Fig18_01.cpp // Demonstrating string assignment and concatenation. #include using std::cout; using std::endl; #include using std::string; 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 << "\nstring2: " << string2 << "\nstring3: " << string3 << "\n\n"; // modify string2 and string3 string2[ 0 ] = string3[ 2 ] = 'r'; cout << "After modification of string2 and string3:\n" << "string1: " << string1 << "\nstring2: " << string2 << "\nstring3: "; // demonstrating member function at for ( int i = 0; i < string3.length(); i++ ) cout << string3.at( i ); // declare string4 and string5 string string4( string1 + "apult" ); // concatenation 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() - 4 ); cout << "\n\nAfter concatenation:\nstring1: " << string1 << "\nstring2: " << string2 << "\nstring3: " << string3 << "\nstring4: " << string4 << "\nstring5: " << string5 << endl; return 0; } // end main /************************************************************************** * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and * * Pearson Education, Inc. 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. * **************************************************************************/