Solution to
Try It Yourself: Arithmetic Expressions

  1. Assume you have been given: int x = 8, y = 7, z = 1;
    double a = 2.0, b = 3.5;
     Evaluate the following expressions: y * 2 + x / 3 Ans: 16
    (a + 3.0) * -b + 4.5 Ans: -13.0
    x % 5 + y * a Ans: 17.0
    y / a + b - x / (-4 + y) Ans: 5.0
    Math.sqrt(x * (y + z)) Ans: 8.0
  2. What is the value of r after the following code executes: int p = 3;
    int q = p * 7;
    p = 4;
    int r = q / p;
    Ans: 5
  3. Assume you have been given: final int QUAD = 4;
     Write a Java code fragment to compute:

    Answers:
    (x + 7) / y + 3 / (x * QUAD)
    (4.0 / 7.0) * Math.cos(y + 1 / Math.sqrt(Math.PI + x))