CS 330 Homework 3 – due before Tuesday, March 6
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CS 145 Lab 5 – Testing and loops
Prelab Complete Exercise 3.1 on the Practice-It website before 8 AM on February 20. Testing Once you’ve wrapped some code up inside a method, it becomes a candidate for quality assurance. You must poke it and prod it to make sure it does what its specification says it does. But here’s the kicker: you should […]
CS 145 Lecture 8 – Loops
Agenda for loops acrostic spelunking display approximating a circle Code ForFun.java package preexam1; public class ForFun { public static void main(String[] args) { for (int i = 0; i < 3; i = i + 1) { System.out.println(“Bye, Patrick!”); } int sum = 0; for (int i = 1; i <= 100; i = i […]
CS 330 Lecture 12 – Arrays and malloc
Agenda a C makefile arrays strings dynamic allocation a stack API Code makefile EXES = first arrays months all: $(EXES) $(EXES): %: %.c gcc -o $@ -Wall -std=c99 $< clean: rm -f $(EXES) arrays.c #include <stdio.h> #include <stdlib.h> int average(int nums[], int len) { int sum = 0; for (int i = 0; i < […]
CS 145 Lecture 7 – Careful coding
Agenda relational operators software disaster careful coding pseudocode build in small pieces test pieces in isolation document some problems to test area of ring Code Utilities.java package preexam1; public class Utilities { // i = get area of inside // o = get area of outside // area = o – i public static double […]
CS 330 Lecture 11 – Hi, C
Agenda quiz review Call subclass in Flop the birth of C compiling printf sizeof functions and forward declarations scanf getting addresses with & pointers Code first.c #include <stdio.h> // —————————————————————————- // Function declarations // —————————————————————————- void clamp(int *number); void clampByValue(int number); // —————————————————————————- // Function implementations // —————————————————————————- int main(int argc, char **argv) { double […]
CS 330 Lecture 10 – Translating to an AST
Agenda adding functions to Flop storing parse results in an AST quiz Code Flop.g grammar Flop; @header { import java.util.HashMap; } @members { HashMap<String, Integer> memory; HashMap<String, Expression> functions; public abstract class Expression { public abstract int evaluate(); } public class Literal extends Expression { private int value; public Literal(int value) { this.value = value; […]
CS 145 Lab 4 – Writing methods
Prelab Complete Self-check 3.13 on the Practice-It website before 8 AM on February 6. Introduction Last time we looked at calling methods that were available in the String, Scanner, and Random classes. This week, we write our own methods. Reminder: Be sure to get your checkpoints from lab 2 checked off in the first 20 […]
CS 145 Lecture 6 – Methods 2
Agenda what does this do? the separation between caller and callee building a snowman method chaining What does this do? Code . <h4>Area.java</h4> <pre class=”code”> package preexam1; public class Area { public static void main(String[] args) { double r1 = 5; // java.awt.Toolkit.getDefaultToolkit().beep(); double area = getArea(8); System.out.println(r1); } public static double getArea(double radius) { […]