// Fig. 3.27: fig03_27.cpp
// Using a function template.
#include <iostream>
#include <cassert>
using std::cout;
using std::cin;
using std::endl;

// definition of function template maximum
template < class T >  // or template< typename T >
T maximum( T value1, T value2, T value3 )
{
   T max = value1;

   if ( value2 > max )
      max = value2;

   if ( value3 > max )
      max = value3;

   return max;

} // end function template maximum

int main()
{
   // demonstrate maximum with int values
   int int1, int2, int3;
	maximum( 2, 3, 4 );

#if 1
   cout << "Input three integer values: ";
   cin >> int1 >> int2 >> int3;

   // invoke int version of maximum
   cout << "The maximum integer value is: "
        << maximum( int1, int2, int3 );        

   // demonstrate maximum with double values
   double double1, double2, double3;

   cout << "\n\nInput three double values: ";
   cin >> double1 >> double2 >> double3;

   // invoke double version of maximum
   cout << "The maximum double value is: "
        << maximum( double1, double2, double3 );

   // demonstrate maximum with char values
   char char1, char2, char3;

   cout << "\n\nInput three characters: ";
   cin >> char1 >> char2 >> char3;

   // invoke char version of maximum
   cout << "The maximum character value is: "
        << maximum( char1, char2, char3 )      
        << endl;
#endif
   return 0;  // indicates successful termination

} // end main


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