Chapt. 10

A set of instructions --that lead to the accomplishment of an objective.

CompilerConverts entire program into object code prior to Execution.

InterpreterConverts small program units (lines of code) into object code then executes them individually

Language CategoriesLow-Level

Machine

Assembly

Problems?

FORTRAN

COBOL

C

BASIC

Object-Oriented Programming (OOP) LanguagesC++

#include "stdafx.h"#include <iostream>

using namespace std;

int main( ) {

     cout << "Hello World“<<endl;

     return 0;

}

Javapublic class TextDemo {         public static void main(String[] args)       { System.out.println("Hello, Welcome to Java

programming") }}

OR

import javax.swing.JOptionPane;  //for the GUI definitions

public class WelcomeMessageDialogBox{    public static void main(String[] args)    {        JOptionPane.showMessageDialog(null, "Hello, Welcome to Java programming","GUI Programming Sample",            JOptionPane.INFORMATION_MESSAGE);    }}

Visual StudioMicrosoft

DelphiBorland

PowerBuilderSybase

Specialty Languages

RPG – Report Generator

Logo – Graphics and audio

Macros – Recorder or VBA

Web Development

Applets and ScriptHTML (DHTML, XMX, etc.)Java script, Perl, PHP, etc.

Servlet -

Program Development Cycle

1. Analysis – “can we get there from here?” (feasibility study)

2. Design – “how do we get there from here?” Structured design vs. object design

IPO Hierarchy charts Flowcharts and pseudocode

Program Design ToolsHierarchy Charts – module development and

process organizationControl structure – control the task sequence

Sequential – Selection –

if – else – binary selection case – multiple option selection

Program Design Tools (cont’d)Repetition Control

do – while – the condition is before the action do – until - the condition is after the action

Flow chart – symbols represent actions Rectangle – a general process Parallelogram – input and output Diamond - decision Arrows – data or process flow Oval – terminal – the end (beginning) of a program

sequence

Sample flowchart

Development Cycle (contd.)3. Validate – “are you sure that is the best way

to go?” Desk Check

4. Implement – “take the trip.” Create the code

Development Cycle (contd.)5. Test and Validate – “are we there yet?”

Check results against known values Parallel processing

6. Document – “take the pictures and write the post cards!!”

Internal documentation External documentation

SummaryProgramCompiler vs. InterpreterProgramming Languages

Low-levelProceduralOOPWeb developmentSpecial use

Summary (part dux)Program Development Cycle

AnalysisDesignValidateImplementTest and ValidateDocument