Initial commit

2019-11-15 12:59:38 +01:00
parent 40a414d210
commit b880c3ccde
6814 changed files with 379441 additions and 0 deletions
@@ -0,0 +1,72 @@
+Fig01_16.cpp - IntCell class with pointers and Big Three
+	
+	#include <iostream.h>
+        class IntCell
+        {
+          public:
+            explicit IntCell( int initialValue = 0 );
+
+            IntCell( const IntCell & rhs );
+            ~IntCell( );
+            const IntCell & operator=( const IntCell & rhs );
+
+            int read( ) const;
+            void write( int x );
+          private:
+            int *storedValue;
+        };
+
+        IntCell::IntCell( int initialValue )
+        {
+            storedValue = new int( initialValue );
+        }
+
+        IntCell::IntCell( const IntCell & rhs )
+        {
+            storedValue = new int( *rhs.storedValue );
+        }
+
+        IntCell::~IntCell( )
+        {
+            delete storedValue;
+        }
+
+        const IntCell & IntCell::operator=( const IntCell & rhs )
+        {
+            if( this != &rhs )
+                *storedValue = *rhs.storedValue;
+            return *this;
+        }
+
+        int IntCell::read( ) const
+        {
+            return *storedValue;
+        }
+
+        void IntCell::write( int x )
+        {
+            *storedValue = x;
+        }
+
+
+        /*
+         * Figure 1.15.
+         */
+        int f( )
+        {
+            IntCell a( 2 );
+            IntCell b = a;
+            IntCell c;
+
+            c = b;
+            a.write( 4 );
+            cout << a.read( ) << endl << b.read( ) << endl << c.read( ) << endl;
+            return 0;
+        }
+
+
+        int main( )
+        {
+            f( );
+            return 0;
+        }