// Whitaker Brand
// CSE142
// TA: Suraj
// Section: QQ
//
// This program demonstrates simple parameter usage.
// Our printY method takes in information at call time
// (on line 13) -- we must now pass an int in order to call
// printY.
public class ParameterExample {
   public static void main(String[] args) {
      int x = 5;
      System.out.println("Here in main, x = " + x);
      // To get data (like the value of the variable x) into a method,
      // we pass that information as a parameter.
      printY(x);
      
      // Note, we don't have to pass a variable, we can pass any int --
      // literals: (17), expressions: (4 + 6), variables: (x), 
      printY(17);
      
      // or even very complex expressions:
      // as long as it evaluates to an int, we're good
      printY(x * x / (4 % 3) + 2 - x + 17 % 5);
      
      // The type of the variable in the header of printY
      // is what determines thet type of data that can be passed in:
      // for this program, only ints
      
      // no doubles: this won't work
      // printY(4.5);
      
      // no strings: this won't work
      // printY("5");
      
      // also, we MUST pass an int: this won't work
      // printY();
   }
   
   // Prints a message with the value of the given parameter
   public static void printY(int y) {
      // Note that here in this method, that same number (5, 17)
      // has a different name than it does in main.
      // What is passed into this method is a number, not a variable
      System.out.println("Here in printY, y = " + y);
   }
}