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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/Prog1/examples/ch08/Fig08_13 | |
| download | Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.gz Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.bz2 | |
Diffstat (limited to 'Bachelor/Prog1/examples/ch08/Fig08_13')
| -rw-r--r-- | Bachelor/Prog1/examples/ch08/Fig08_13/Fig08_13.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/Bachelor/Prog1/examples/ch08/Fig08_13/Fig08_13.cpp b/Bachelor/Prog1/examples/ch08/Fig08_13/Fig08_13.cpp new file mode 100644 index 0000000..cd74972 --- /dev/null +++ b/Bachelor/Prog1/examples/ch08/Fig08_13/Fig08_13.cpp @@ -0,0 +1,104 @@ +// Fig. 8.13: fig08_13.cpp
+// Standard library string class test program.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include <string>
+
+using std::string;
+
+int main()
+{
+ string s1( "happy" );
+ string s2( " birthday" );
+ string s3;
+
+ // test overloaded equality and relational operators
+ cout << "s1 is \"" << s1 << "\"; s2 is \"" << s2
+ << "\"; s3 is \"" << s3 << '\"'
+ << "\n\nThe results of comparing s2 and s1:"
+ << "\ns2 == s1 yields "
+ << ( s2 == s1 ? "true" : "false" )
+ << "\ns2 != s1 yields "
+ << ( s2 != s1 ? "true" : "false" )
+ << "\ns2 > s1 yields "
+ << ( s2 > s1 ? "true" : "false" )
+ << "\ns2 < s1 yields "
+ << ( s2 < s1 ? "true" : "false" )
+ << "\ns2 >= s1 yields "
+ << ( s2 >= s1 ? "true" : "false" )
+ << "\ns2 <= s1 yields "
+ << ( s2 <= s1 ? "true" : "false" );
+
+ // test string member function empty
+ cout << "\n\nTesting s3.empty():\n";
+
+ if ( s3.empty() ) {
+ cout << "s3 is empty; assigning s1 to s3;\n";
+ s3 = s1; // assign s1 to s3
+ cout << "s3 is \"" << s3 << "\"";
+ }
+
+ // test overloaded string concatenation operator
+ cout << "\n\ns1 += s2 yields s1 = ";
+ s1 += s2; // test overloaded concatenation
+ cout << s1;
+
+ // test overloaded string concatenation operator
+ // with C-style string
+ cout << "\n\ns1 += \" to you\" yields\n";
+ s1 += " to you";
+ cout << "s1 = " << s1 << "\n\n";
+
+ // test string member function substr
+ cout << "The substring of s1 starting at location 0 for\n"
+ << "14 characters, s1.substr(0, 14), is:\n"
+ << s1.substr( 0, 14 ) << "\n\n";
+
+ // test substr "to-end-of-string" option
+ cout << "The substring of s1 starting at\n"
+ << "location 15, s1.substr(15), is:\n"
+ << s1.substr( 15 ) << '\n';
+
+ // test copy constructor
+ string *s4Ptr = new string( s1 );
+ cout << "\n*s4Ptr = " << *s4Ptr << "\n\n";
+
+ // test assignment (=) operator with self-assignment
+ cout << "assigning *s4Ptr to *s4Ptr\n";
+ *s4Ptr = *s4Ptr;
+ cout << "*s4Ptr = " << *s4Ptr << '\n';
+
+ // test destructor
+ delete s4Ptr;
+
+ // test using subscript operator to create lvalue
+ s1[ 0 ] = 'H';
+ s1[ 6 ] = 'B';
+ cout << "\ns1 after s1[0] = 'H' and s1[6] = 'B' is: "
+ << s1 << "\n\n";
+
+ // test subscript out of range with string member function "at"
+ cout << "Attempt to assign 'd' to s1.at( 30 ) yields:" << endl;
+ s1.at( 30 ) = 'd'; // ERROR: subscript out of range
+
+ return 0;
+
+} // end main
+
+/**************************************************************************
+ * (C) Copyright 1992-2003 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. *
+ *************************************************************************/
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