//
// Ruth Anderson
// In Class Example about Variables
// 10/02/06
//
// This program is just meant to demonstrate a few things about
// variables.  I would recommend downloading it and compiling 
// and running it yourself.  Try changing parts of the program
// and see how the values of the variables change.
// Try out what you have learned about expressions as well.
//
// I put an excessive number of comments throughout this file 
// to explain what is happening.  You should have a header comment
// like this one at the top of your programs, but in general
// do not need to write comments to the level I have done here
// elsewhere in the program.
//
// Comments are ignored by the compiler, but are useful to humans
// reading your program.  They appear in GREEN in Dr. Java.
//
public class Lect3 {
  public static void main(String[] args) {
    
    // Declare two integer variables
    int max;
    int min;
    
    // Store the integer value 5 in the variable named max
    max = 5;
    
    // I commented out the line of code below but you can uncomment it
    // by deleting the // to see how it changes what is printed out.
    // max = 7 + 3 * 10;
    
    // Print out what is currently stored in the variable max
    System.out.println(max);
    
    // Add 6 to what is currently stored in max
    //
    // Notice how evaluating the expression on the right requires looking
    // up the value that is currently stored in max.
    // Notice that the value of the expression on the right is calculated
    // BEFORE it is stored back into max.
    //
    max = max + 6;  // Notice this actually CHANGES what is stored in max
    System.out.println(max);
    
    // REPLACE what is currently stored in max with the value 12
    max = 12;
    System.out.println(max);
    
    // Print out the value of an expression using the value store in max
    // Notice that this does NOT change what is stored in max
    System.out.println(max + 2 * 5);
    
    // What is stored in the variable max now?
    System.out.println(max);
    
    // What do you expect these to print out?
    System.out.println(max / 7);
    System.out.println(max % 7);
    
  }
}