» CS 145 Lecture 1 – Introduction, data, and arithmetic operators

CS 145 Lecture 1 – Introduction, data, and arithmetic operators

January 25, 2012 by Chris Johnson. Filed under cs145, lectures, spring 2012.

Agenda

introduction
our class:

prior programming experience
majors
communication

math
two fronts: data and instructions
arithmetic operators
variables
data: ints and doubles
instructions: System.out.println, + – * / % =

Code

Mathiness.java

package preexam1;

public class Mathiness {
  public static void main(String[] args) {
    System.out.println(26.16 * 0.15);
    System.out.println(1000000.0 / 540000.0);
    System.out.println();
    System.out.println(57 % 12);

    double radius;
    radius = 16;
    System.out.println(radius);
    // System.out.println(Math.PI * 4 * 4);

    // Look, Ma! It's symbolic!
    System.out.println(Math.PI * radius * radius);

    double clipsPerHour;
    clipsPerHour = 22050.0 / 24.0;

    double clipsPerMinute = clipsPerHour / 60.0;
    System.out.println(clipsPerMinute);

    double a = 7, b = a;
    System.out.println(a);
  }
}

TODO

Read sections 2.1 and 2.2 in your book.

Haiku

haiku.sb