public class Expressions
{
   public static void main(String[] args)
   {
      int k, m, n;
      double x, y, z;
      String s, t, u;
      char c, d;
      
      m = 5;
      n = 13;
      k = n + 8 / 5;
      System.out.println("k = " + k);     // k = 14
      
      x = 3.6;
      y = -10.5;
      z = x / 2 * y;
      System.out.println("z = " + z);     // z = -18.9
      
      c = 'A';
      System.out.println("c = " + c);     // c = A
      
      d = '&';
      System.out.println("d = " + d);     // d = &
      
      s = "hello";
      t = "world";
      u = s + t;
      System.out.println("u = " + u);     // u = helloworld
      
      u = s + "\n" + t;
      System.out.println("u = " + u);     // u = hello
                                 // world
   }
}