Solution 2 to Typical First Challenge

<?PROGRAM> ->

  // Prompt for three <int>s
     IO.print("Enter three integers:  ");

  // Read the three s
     int n1 = IO.read_int();
     int n2 = IO.read_int();
     int n3 = IO.read_int();

  // Compute the maximum value
     int max;
     if ( n1 >= n2 )
     {
        if ( n1 >= n3 )
        {
           max = n1;
        }
        else
        {
           max = n3;
        };
     }
     else
     {
        if ( n2 >= n3 )
        {
           max = n2;
        }
        else
        {
           max = n3;
        };
     }

  // Compute the minimum value
     int min;
     if ( n1 <= n2 )
     {
        if ( n1 <= n3 )
        {
           min = n1;
        }
        else
        {
           min = n3;
        };
     }
     else
     {
        if ( n2 <= n3 )
        {
           min = n2;
        }
        else
        {
           min = n3;
        };
     }

  // Compute the desired difference
     int diff = max - min;

  // Print the desired difference
     IO.println("The difference is:  " + diff);