// Bob Myers
//
// Example illustrating some function declarations, definitions, calls
// The class contains main(), as well as the three methods
// The sample CALLS in this example are done from main()

import java.util.Scanner;

public class Methods1
{

  public static int sum(int x, int y, int z)
  // add the three parameters together and return the result
  {   
     int answer;
     answer = x + y + z;
     return answer;
  }
 
  public static double average (double a, double b, double c)
  // add the parameters, divide by 3, and return the result
  {
     return (a + b + c) / 3.0;
  }

  public static boolean inOrder(int x, int y, int z)
  // answers yes/no to the question "are these parameters in order,
  //  smallest to largest?"  Returns true for yes, false for no.
  //  (This kind of function often known as a "predicate function")  
  {
     if (x <= y && y <= z)
        return true;
     else
        return false;
  }

 
  public static void main(String[] args)
  {
    Scanner input = new Scanner(System.in);

    int i1, i2, i3;
    double d1, d2, d3; 

    System.out.print("Input three integers: ");
    i1 = input.nextInt();
    i2 = input.nextInt();
    i3 = input.nextInt();

    System.out.print("Input three doubles: ");
    d1 = input.nextDouble();
    d2 = input.nextDouble();
    d3 = input.nextDouble();

    // samples of function calls

    double avg;
    int total;
    total = sum(i1, i2, i3);
    avg = average(d1, d2, d3);

    System.out.println("The sum of the three integers = " + total);
    System.out.println("The average of the three doubles = " + avg);
 
    // note that we can place the call in the print statements, which 
    //  prints the return values

    System.out.println("The sum of 10, 14, and 18 = " + sum(10, 14, 18));

    System.out.println("The average of 1.3, 2.7, and 6.9 = " 
				+ average(1.3, 2.7, 6.9) );


    // Notice that we can pass in integers where doubles are expected
    //   legal via automatic-type-conversion rules

    System.out.println("The average of the three integers = " 
				+ average(i1, i2, i3) );


    // Testing out the boolean function (InOrder)

    if (inOrder(i1, i2, i3))
      System.out.println("The three integers were typed in ascending order");
    else
      System.out.println("The three integers were NOT typed in ascending order");
  }
}