59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
Fig01_23.cpp - Using Comparable templates - Employee class example
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#include <iostream.h>
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#include "vector.h"
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#include "mystring.h"
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class Employee
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{
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public:
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void setValue( const string & n, double s )
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{ name = n; salary = s; }
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void print( ostream & out ) const
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{ out << name << " (" << salary << ")"; }
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bool operator< ( const Employee & rhs ) const
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{ return salary < rhs.salary; }
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// Other general accessors and mutators, not shown
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private:
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string name;
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double salary;
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};
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// Define an output operator for Employee
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ostream & operator<< ( ostream & out, const Employee & rhs )
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{
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rhs.print( out );
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return out;
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}
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/**
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* Return the maximum item in array a.
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* Assumes a.size( ) > 0.
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* Comparable objects must provide
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* copy constructor, operator<, operator=
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*/
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template <class Comparable>
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const Comparable & findMax( const vector<Comparable> & a )
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{
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/* 1*/ int maxIndex = 0;
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/* 2*/ for( int i = 1; i < a.size( ); i++ )
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/* 3*/ if( a[ maxIndex ] < a[ i ] )
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/* 4*/ maxIndex = i;
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/* 5*/ return a[ maxIndex ];
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}
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int main( )
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{
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vector<Employee> v( 3 );
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v[0].setValue( "Bill Clinton", 200000.00 );
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v[1].setValue( "Bill Gates", 2000000000.00 );
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v[2].setValue( "Billy the Marlin", 60000.00 );
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cout << findMax( v ) << endl;
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return 0;
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}
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