ITEC 320

Procedural ProgrammingDr. Ray

Lecture 1

Introduction

Outline

• Welcome• Intro to the course• Ada

Introduction

Introduction

• On a scale of 1 to 10, how interested are you in learning a different language?

• How many lines of code did you write for the largest program you’ve worked on?

• What do you want to learn in this course?

• Share with your neighbor• Introduce yourselves and answers to

the class

Introduction

Languages

• What advantages are there to learning a new computer language?

• What are the some of the reasons for learning a new language?

• Why is this important?– Objective C example

Introduction

1970s

• The era of…• Multiple languages used at the

DOD…• What are some of the problems with

using multiple languages?• What happens when you use multiple

languages for one project?

Introduction

Solution

• Design competition

Introduction

Result

• Procedural / OO mixed language• Multi-threaded / generics• Reliability and maintenance• Readability over writability

$line =~ /.{28}(\d\d)-(\d\d)-(\d\d).{8}(.+)$/

Introduction

Differences

Java

Ada

public class HelloWorld{

public static void main(String[] args){

int x;x=3;System.out.println(x);

}}

with ada.text_io;with ada.integer_text_io;procedure hello1 is x: Integer;begin x := 3; ada.text_io.put_line("Hello World"); ada.integer_text_io.put(x);end hello1;

Introduction

First impressions

• What are your thoughts on what you just saw?

with ada.text_io;with ada.integer_text_io;procedure hello1 is x: Integer;begin x := 3; ada.text_io.put_line("Hello World"); ada.integer_text_io.put(x);end hello1;

Introduction

How to make it work

• Write / Compile / Execute cycle• Editors– vi filename.adb

• Compiler– gnatmake filename

• Execution– filename or ./filename (Mac)

Introduction

Syllabus

• MWF Lectures• Office Hours 10:00 AM M-F• Website• D2L for submission• Projects• Homework• Exams

Will be mirroring Dr. Okie’s section

Introduction

Summary

• Short day• History of ADA• Basics of the language• Introductory comparison of the

languages