#include <iostream.h>

template <class T> // template prefix
T abs(T value)     // header line
{
  T absnum;  // variable declaration

  if (value < 0)
    absnum = -value;
  else
    absnum = value;

  return (absnum);
}
int main()
{
  int num1 = -4;
  float num2 = -4.23;
  double num3 = -4.23456;

  cout << "The absolute value of " << num1
       << " is " << abs(num1) << endl;
  cout << "The absolute value of " << num2
       << " is " << abs(num2) << endl; 
  cout << "The absolute value of " << num3
       << " is " << abs(num3) << endl;

  return 0;
}