Definition of function template maximum : function definition « Function « C++ Tutorial

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2. Function
3. function definition

#include <iostream>
using std::cout;
using std::cin;
using std::endl;


template < class T >  
T maximum( T value1, T value2, T value3 )
{
   T maximumValue = value1; 

   if ( value2 > maximumValue )
      maximumValue = value2;

   if ( value3 > maximumValue )
      maximumValue = value3;

   return maximumValue;
}


int main()
{
   int int1, int2, int3;

   int1 = 1;
   int2 = 2;
   int3 = 3;

   cout << "\nThe maximum integer value is: " << maximum( int1, int2, int3 );
      

   double double1, double2, double3;

   double1 = 1.1;
   double2 = 2.2;
   double3 = 3.3;

   cout << "\nThe maximum double value is: "<< maximum( double1, double2, double3 );

   char char1, char2, char3;

   char1 = 'a';
   char2 = 'b';
   char3 = 'c';

   cout << "\nThe maximum character value is: "<< maximum( char1, char2, char3) << endl;
   return 0;
}

The maximum integer value is: 3
The maximum double value is: 3.3
The maximum character value is: c