max.cpp

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// Tutorial 21: Max.cpp
// Display the maximum value of the three numbers.
#include <iostream>  // required for C++ stream I/O

using namespace std; // for accessing C++ Standard Library Members

// function prototype
template < class T >
T maximum( T, T, T );

// function main begins program execution
int main()
{
   // define variables
   int firstInt; // first integer
   int secondInt; // second integer
   int thirdInt; // third integer
   double firstDouble; // first double
   double secondDouble; // second double
   double thirdDouble; // third double
   
   // prompt the user for and input three ints
   cout << "\nEnter first integer: ";
   cin >> firstInt; // first integer

   cout << "Enter second integer: ";
   cin >> secondInt; // second integer

   cout << "Enter third integer: ";
   cin >> thirdInt; // third integer

   // call maximum with the three integer values 
   // and display the return value
   cout << "\nThe maximum integer value is: "
        << maximum( firstInt, secondInt, thirdInt ) << endl;

   // prompt the user for and input three doubles
   cout << "\nEnter first floating-point value: ";
   cin >> firstDouble;

   cout << "Enter second floating-point value: ";
   cin >> secondDouble;

   cout << "Enter third floating-point value: ";
   cin >> thirdDouble;

   // call maximum with the three floating point values
   // and display the return value
   cout << "\nThe maximum floating point number is: "
        << maximum( firstDouble, secondDouble, thirdDouble )
        << endl << endl;

   return 0; // indicate that program ended successfully

} // end function main

// returns the maximum of the three values
template < class T >
T maximum( T first, T second, T third )
{
   T max = value1;
   
   if ( value2 > max )
   {
      max = value2;
   } // end if

   if ( value3 > max )
   {
      max = value3;
   } // end if

   return max; // return the largest value

} // end function template maximum


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