Fig01_06.cpp - IntCell class with a few extras, with a test program #include /** * A class for simulating an integer memory cell. */ class IntCell { public: /* 1*/ explicit IntCell( int initialValue = 0 ) /* 2*/ : storedValue( initialValue ) { } /* 3*/ int read( ) const /* 4*/ { return storedValue; } /* 5*/ void write( int x ) /* 6*/ { storedValue = x; } private: /* 7*/ int storedValue; }; int main( ) { IntCell m; m.write( 5 ); cout << "Cell contents: " << m.read( ) << endl; return 0; }