// In-class example
// Shows variable declaration and assignment,
// and also a conditional.

public class ConditionalExamples {
  
  public static void main(String[] args){
    int a,b,c;      // declare three ints
    int d = 7;      // declare and initialize together
    a = d*d;        // some assignment statements
    b = d-d*d;
    c = a+b;        // == d*d + (d - d*d) == d
    testValue(a);        // variable in a method call
    testValue(a+b+c+d);  // expression in a method call
    System.out.print("a = " + a + "; b = " + b + "; ");
    System.out.println("a == b is " + (a == b));
    System.out.print("c = " + d + "; d = " + d + "; ");
    System.out.println("c == d is " + (c == d));
  }
  
  // This method prints whether x is negative or
  // non-negative
  public static void testValue(int x){
    if (x < 0) {
      System.out.println("The value of " + x 
                           + " is negative");
    } else {
      System.out.println("The value of " + x 
                           + " is non-negative");
    }
  }
}