45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
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Fig01_19.cpp - MemoryCell class template without separation
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#include <iostream.h>
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#include "mystring.h"
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/**
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* A class for simulating a memory cell.
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*/
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template <class Object>
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class MemoryCell
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{
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public:
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explicit MemoryCell( const Object & initialValue = Object( ) )
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: storedValue( initialValue ) { }
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const Object & read( ) const
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{ return storedValue; }
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void write( const Object & x )
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{ storedValue = x; }
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private:
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Object storedValue;
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};
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// OOPS: I forgot to put a + operator in the string class.
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// So it's here:
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string operator+( const string & lhs, const string & rhs )
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{
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string result = lhs;
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return result += rhs;
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}
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int main( )
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{
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MemoryCell<int> m1;
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MemoryCell<string> m2( "hello" );
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m1.write( 37 );
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m2.write( m2.read( ) + " world" );
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cout << m1.read( ) << endl << m2.read( ) << endl;
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return 0;
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}
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