COMSC 101 Programming Exercises FA15

Total Page:16

File Type:pdf, Size:1020Kb

COMSC 101 Programming Exercises FA15 COMSC 101 Programming Exercises FA15 Programming is fun! Click HERE to see why. This set of 10 exercises is designed for you to try out programming for yourself. Who knows – maybe you’ll be inspired to pursue study in computer science. At least you’ll gain an appreciation for discipline, exactness, patience, and attention to detail that it takes to be a programmer. In any case, learning to program can help you develop problem-­­solving skills. As you go through these assignments, take the time to: • understand the problem before you start doing any programming – read all instructions first, • complete one step at a time and make sure it’s correct before starting the next step, • know when to take your losses – remember you can always start over if you get hopelessly lost. In order to develop any useful understanding of programming, it is necessary to actually do some programming. That’s what this series of exercises does – it provides a structured, step-­­by-­­little-­­step sequence for learning basic programming steps. If you are diligent, read thoroughly, and precise, you will go easily from one exercise to the next, learning a bit more each time. Python 3 The exercises in this series are designed using the “Python 3” computer programming language. There are two ways to work with Python – one that requires only a browser and an Internet connection, and another that requires installation of software on your computer but needs no internet connection after that. Your instructor will guide you in making your choice between the two. To use a browser, you’ll go to www.repl.it/languages/Python3, and you’ll create your programs and run them directly on that website’s home page. The advantage of using a browser is that you can work anywhere there is an Internet connection. The disadvantage is that Internet connections can be lost or can time out. We’ll refer to this way of working with Python as repl.it. To use installed software, you’ll first have to download and install Python itself, and a program called PyCharm which does what the browser page does. In DVC’s computer labs, these are already installed. If You Get Stuck You may struggle with some of these assignments. That’s normal – it’s part of the learning process. When it happens do this: start the assignment over from scratch, and repeat this process until you complete the assignment without struggle. Do this before going to the next exercise, because each new exercise builds on what you learned from the previous ones. And click HERE for FAQs that may help you get unstuck. Online students: Contact your instructor for help before spending a lot of time in trial and error and becoming frustrated. Remember that this is supposed to be a positive experience of learning some basics of how computer programming works. There are many conceptual hurdles to overcome throughout this series of exercises, and your instructor is here to help you over them. Inperson students: These exercises are to be completed during the lab period of your regular scheduled class time, with the help and supervision of your instructor. Seek your instructor’s help whenever you find yourself struggling with understanding the requirements of an exercise or if things are not working for Comsc 101 Page 1 of 21 Programming Exercises you. These exercises are not designed for you to do outside of class on your own, so if you work on any at home and run into difficulty, bring it to class so that you can get it resolved. EXERCISE 1a: Using The Internet Browser to Write And Run Python Programs [hello.py] Purpose. The purpose of this exercise is to make sure you can access and use repl.it. Your instructor may direct you to skip this exercise and go to exercise 1b instead, using only PyCharm. Requirements. On a Windows PC or on a Mac, open the Internet browser of your choice. Make sure you have access to the Internet, and go to this URL: www.repl.it/languages/Python3 You should see something very much like this: Exploring. If so, type this in the “edit box ” next to the “1”: prin t ("Hello World") including the quote marks and parentheses . Then c lick to “run” the program, and you should see this in the “output box” – note “ Hello World!” : So already you have seen what a Python program looks like, you’ve “run” a program that you typed into what we call the “edit” box. And we saw what actual output looks like, in what we call the “output” box. Good start! Experimenting. Play around with this – try typing different text in the “print statement” of the code, and run – observe the output. Add more print statements above or below the one with “Hello World!” – see what output you can produce. Be sure to fully left-justify each print statement! HINT: To add another print statement, “copy/paste/markup” the existing “print ("Hello World")” statement – do not type it from scratch! This helps to avoid typing errors. Comsc 101 Page 2 of 21 Programming Exercises YOUR TURN. Here’s the exercise – in the “edit” box, insert two blank lines above the print statement you typed earlier, just like you would insert a line in any text editor. In the new line “1” type a hash symbol (#) and a space, and type your name and student ID. Starting in line 2, type additional comments as directed by your instructor. Remember to use the hash symbol at the start of each comment! Write as many comments as necessary, and leave one blank line after the last comment for spacing. Starting after the blank line that follows the comments, enter one or more “print statements”, printing the text that your instructor assigns. It may include your name, something about yourself, something about the class or the assignment -- however your instructor directs you. About that print statement – the space before the opening parenthesis is not required. And the double-quotes can be single quotes. These are your choices – pick a way and stick with it. Submitting Your Work. Your instructor may just want to see your working program in the lab, and check you off without “submitting” the file or they may require that you submit the program in printed or electronic form. In any case, you will certainly want a backup of the program you wrote, because once you close your browser, all you typed will be lost! So save it to a file: To save your work to a file, open Notepad++ or Windows 8 Notepad or Mac TextEdit (formatted to “make plain text”). With that running in one window, navigate back to Python browser page and select and copy the contents of the “edit” box. Navigate back to Notepad or TextEdit and paste. Save it with a name as specified by your instructor. That’s the file you will submit. Avoid Microsoft Word, or any rich-text editor (like Mac TextEdit formatted to “make rich text”). These can lose line breaks or insert extra ones when copied back into the “edit” box. Comsc 101 Page 3 of 21 Programming Exercises If you have any further work to do on the file – any more programming to do – anything your instructor wants you to fix – then open the file, select/copy its Python program, and paste it all into the “edit” box of the browser page, and just continue from there. HINT: To clear the output box, click at the top middle of the output box. HINT: If you cannot see the button, then widen your browser window, or make the edit box wider by grabbing and dragging its border with the output box. TIMING OUT. If you wait too long without doing anything, repl.it times out. If this happens, select your program in the edit box using ctrl-A (or command-A) and copy it using ctrl-C (or command-C), then refresh the page with ctrl-R (or command-R). When the page reloads, click in the edit box and do ctrl-P (or command-P) to paste and restore your program. Then proceed as normal. EXERCISE 1b: Using PyCharm To Write And Run Python Programs [hello.py] Purpose. The purpose of this exercise is to make sure you can access and use PyCharm. Your instructor may direct you to skip this exercise and use only repl.it instead, per exercise 1a. PyCharm Installation for Online Students. Before you can use PyCharm, you’ll need to install it. There are two separate installations – one for Python 3 and one for PyCharm. To install Python 3, go to https://www.python.org/downloads and choose “Download Python 3.4.3”. Then scroll down to the “Files” section and select the “installer” file that matches your system. There’s one for older Macs (32bit) and one for newer Macs (64-bit). There’s one for older Windows PCs (x86 MSI) and one for newer (x86-64 MSI). Select all defaults during the installation process. Once that’s done, go to https://www.jetbrains.com/pycharm/download and download the Windows or Mac version of the Community Edition. Select all defaults during the installation process. Then you should be able to find PyCharm in your Windows PC start menu or your Mac Applications folder. Starting PyCharm In Windows 7. The DVC computer labs are Windows 7 PCs. An easy way to start PyCharm is to use the start menu and type pycharm in to the search box. Then click “JetBrains PyCharm Community Edition 4.0.6”.
Recommended publications
  • Introduction to Programming in Fortran 77 for Students of Science and Engineering
    Introduction to programming in Fortran 77 for students of Science and Engineering Roman GrÄoger University of Pennsylvania, Department of Materials Science and Engineering 3231 Walnut Street, O±ce #215, Philadelphia, PA 19104 Revision 1.2 (September 27, 2004) 1 Introduction Fortran (FORmula TRANslation) is a programming language designed speci¯cally for scientists and engineers. For the past 30 years Fortran has been used for such projects as the design of bridges and aeroplane structures, it is used for factory automation control, for storm drainage design, analysis of scienti¯c data and so on. Throughout the life of this language, groups of users have written libraries of useful standard Fortran programs. These programs can be borrowed and used by other people who wish to take advantage of the expertise and experience of the authors, in a similar way in which a book is borrowed from a library. Fortran belongs to a class of higher-level programming languages in which the programs are not written directly in the machine code but instead in an arti¯cal, human-readable language. This source code consists of algorithms built using a set of standard constructions, each consisting of a series of commands which de¯ne the elementary operations with your data. In other words, any algorithm is a cookbook which speci¯es input ingredients, operations with them and with other data and ¯nally returns one or more results, depending on the function of this algorithm. Any source code has to be compiled in order to obtain an executable code which can be run on your computer.
    [Show full text]
  • A Beginner's Guide to Freebasic
    A Beginner’s Guide to FreeBasic Richard D. Clark Ebben Feagan A Clark Productions / HMCsoft Book Copyright (c) Ebben Feagan and Richard Clark. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". The source code was compiled under version .17b of the FreeBasic compiler and tested under Windows 2000 Professional and Ubuntu Linux 6.06. Later compiler versions may require changes to the source code to compile successfully and results may differ under different operating systems. All source code is released under version 2 of the Gnu Public License (http://www.gnu.org/copyleft/gpl.html). The source code is provided AS IS, WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Microsoft Windows®, Visual Basic® and QuickBasic® are registered trademarks and are copyright © Microsoft Corporation. Ubuntu is a registered trademark of Canonical Limited. 2 To all the members of the FreeBasic community, especially the developers. 3 Acknowledgments Writing a book is difficult business, especially a book on programming. It is impossible to know how to do everything in a particular language, and everyone learns something from the programming community. I have learned a multitude of things from the FreeBasic community and I want to send my thanks to all of those who have taken the time to post answers and examples to questions.
    [Show full text]
  • AN125: Integrating Raisonance 8051 Tools Into The
    AN125 INTEGRATING RAISONANCE 8051 TOOLS INTO THE SILICON LABS IDE 1. Introduction 4. Configure the Tool Chain This application note describes how to integrate the Integration Dialog Raisonance 8051 Tools into the Silicon Laboratories Under the 'Project' menu, select 'Tool Chain Integration’ IDE (Integrated Development Environment). Integration to bring up the dialog box shown below. Raisonance provides an efficient development environment with (Ride 7) is the default. To use Raisonance (Ride 6), you compose, edit, build, download and debug operations can select it from the 'Preset Name' drop down box integrated in the same program. under 'Tools Definition Presets'. Next, define the Raisonance assembler, compiler, and linker as shown in 2. Key Points the following sections. The Intel OMF-51 absolute object file generated by the Raisonance 8051 tools enables source-level debug from the Silicon Labs IDE. Once Raisonance Tools are integrated into the IDE they are called by simply pressing the ‘Assemble/ Compile Current File’ button or the ‘Build/Make Project’ button. See the “..\Silabs\MCU\Examples” directory for examples that can be used with the Raisonance tools. Information in this application note applies to Version 4.00 and later of the Silicon Labs IDE and Ride7 and later of the Raisonance 8051 tools. 4.1. Assembler Definition 1. Under the ‘Assembler’ tab, if the assembler 3. Create a Project in the Silicon executable is not already defined, click the browse Labs IDE button next to the ‘Executable:’ text box, and locate the assembler executable. The default location for A project is necessary in order to link assembly files the Raisonance assembler is: created by the compiler and build an absolute ‘OMF-51’ C:\Program Files\Raisonance\Ride7\bin\ma51.exe output file.
    [Show full text]
  • 4 Using HLA with the HIDE Integrated Development Environment
    HLA Reference Manual 5/24/10 Chapter 4 4 Using HLA with the HIDE Integrated Development Environment This chapter describes two IDEs (Integrated Development Environments) for HLA: HIDE and RadASM. 4.1 The HLA Integrated Development Environment (HIDE) Sevag has written a nice HLA-specified integrated development environment for HLA called HIDE (HLA IDE). This one is a bit easier to install, set up, and use than RadASM (at the cost of being a little less flexible). HIDE is great for beginners who want to get up and running with a minimal amount of fuss. You can find HIDE at the HIDE home page: http://sites.google.com/site/highlevelassembly/downloads/hide Contact: [email protected] Note: the following documentation was provided by Sevag. Thanks Sevag! 4.1.1 Description HIDE is an integrated development environment for use with Randall Hyde's HLA (High Level Assembler). The HIDE package contains various 3rd party programs and tools to provide for a complete environment that requires no files external to the package. Designed for a system- friendly interface, HIDE makes no changes to your system registry and requires no global environment variables to function. The only exception is ResEd (a 3rd party Resource Editor written by Ketil.O) which saves its window position into the registry. 4.1.2 Operation HIDE is an integrated development environment for use with Randall Hyde's HLA (High Level Assembler). The HIDE package contains various 3rd party programs and tools to provide for a complete environment that requires no files external to the package. Designed for a system- friendly interface, HIDE makes no changes to your system registry and requires no global environment variables to function.
    [Show full text]
  • TSO/E Programming Guide
    z/OS Version 2 Release 3 TSO/E Programming Guide IBM SA32-0981-30 Note Before using this information and the product it supports, read the information in “Notices” on page 137. This edition applies to Version 2 Release 3 of z/OS (5650-ZOS) and to all subsequent releases and modifications until otherwise indicated in new editions. Last updated: 2019-02-16 © Copyright International Business Machines Corporation 1988, 2017. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents List of Figures....................................................................................................... ix List of Tables........................................................................................................ xi About this document...........................................................................................xiii Who should use this document.................................................................................................................xiii How this document is organized............................................................................................................... xiii How to use this document.........................................................................................................................xiii Where to find more information................................................................................................................ xiii How to send your comments to IBM......................................................................xv
    [Show full text]
  • A Peek Under the IDE Hood Overview
    Intro to Arduino A Peek Under the IDE Hood Overview Grades: 5-7 Time: 5-15 minutes Subject: Computer Science, Electronics This PDQ provides a quick and easy peek at some sample Arduino Code. Have no fear – it’s simple and clear! Background Arduino is both an Open Source hardware AND software platform that enables creators, inventors, students and just about anyone to learn basic electronics and coding to make projects. The FREE software for programming your Arduino hardware is called Arduino IDE. IDE stands for Integrated Development Environment. The IDE is available for computers running Windows, MacOS, and LINUX. Let’s take a look! Objectives • Understand & Recognize: • “Arduino” as a hardware and software platform for making projects. • “Open Source” as a model of creating and sharing information. • “input” and “output” in both hardware and software based on looking at Arduino projects. • “Community” in the sense of people connected through a common interest such as making cool projects with Arduino. • “Computer programming” or “coding” means writing instructions for the hardware to follow. What You'll Need The activities in this module only require you to have some kind of Internet connected device and a browser! Chromebook, smart phone, supercomputer – whatever you have on hand to search the Internet is all you need! Important Terms Open Source: A model of sharing inventions and information for others to use, improve and share again. Hardware: The”physical” part of a computer or device. If you can thump it on a table, it’s probably hardware. Software: The computer program or “instructions you write” for the hardware.
    [Show full text]
  • AN-8207 — Fairchild's Motor Control Development System (MCDS
    www.fairchildsemi.com AN-8207 Fairchild’s Motor Control Development System (MCDS) Integrated Development Environment (IDE) Summary Features The MCDS IDE has following features: The Motor Control Development System (MCDS) is a collection of software and hardware components . Project Management constructed and developed by Fairchild Semiconductor to . Registers Setting facilitate the development of motor control applications. It . Code Generator includes the MCDS Integrated Development Environment (IDE), MCDS Programming Kit, Advanced Motor Control . Editor (AMC) libraries, evaluation board, and motor. Compiler Interface The purpose of this user guide is to describe how to use the . Programming MCDS IDE to develop the firmware of motor applications. Debug Mode Please visit Fairchild’s web for more information: . Motor Tuning http://www.fairchildsemi.com/applications/motor- . control/bldc-pmsm-controller.html. Configure AMC Library System Requirements The MCDS IDE requires the following: . Microsoft® Windows® XP or Windows® 7 . 1 G RAM or greater . 100 MB of hard disk space . USB port . Keil µVision® 3 or above . MCDS Programming Kit © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev. 1.0.0 • 2/18/13 AN-8207 APPLICATION NOTE Getting Started Software Installation Please follow steps below to install the MCDS IDE on the computer where development will occur. Download the MCDS IDE installation files from: http://www.fairchildsemi.com/applications/motor- control/bldc-pmsm-controller.html The Welcome to the MCDS Setup Wizard (See Figure 1) appears on the screen. 1. Click Next> to continue (or Cancel to exit). Figure 3. Select Start Menu Folder When the Ready to Install (see Figure 4) dialog appears, the selections are shown.
    [Show full text]
  • Control Flow Statements in Java Tutorials Point
    Control Flow Statements In Java Tutorials Point Cnidarian and Waldenses Bubba pillar inclemently and excorticated his mong troublesomely and hereabout. andRounding convective and conversational when energises Jodi some cudgelled Anderson some very prokaryote intertwiningly so wearily! and pardi? Is Gordon always scaphocephalous Go a certain section, commercial use will likely somewhere in java, but is like expression representation of flow control for loop conditionals are independent prognostic factors In this disease let's delve deep into Java Servlets and understand when this. Java Control Flow Statements CoreJavaGuru. Loops in Java Tutorialspointdev. Advantages of Java programming Language. Matlab object On what Kitchen Floor. The flow of controls cursor positioning of files correctly for the python and we represent the location of our java entry points and times as when exploits are handled by minimizing the. The basic control flow standpoint the typecase construct one be seen to realize similar to. Example- Circumference of Circle 227 x Diameter Here This technique. GPGPU GPU Java JCuda For example charity is not discount to control utiliza- com A. There are 3 types of two flow statements supported by the Java programming language Decision-making statements if-then they-then-else switch Looping. Java IfElse Tutorial W3Schools. Spring batch passing data between steps. The tutorial in? Remove that will need to point handling the tutorial will be used or run unit of discipline when using this statement, easing the blinking effect. Either expressed or database systems support for tcl as a controlling source listing applies to a sending field identifier names being part and production.
    [Show full text]
  • C Programming Tutorial
    C Programming Tutorial C PROGRAMMING TUTORIAL Simply Easy Learning by tutorialspoint.com tutorialspoint.com i COPYRIGHT & DISCLAIMER NOTICE All the content and graphics on this tutorial are the property of tutorialspoint.com. Any content from tutorialspoint.com or this tutorial may not be redistributed or reproduced in any way, shape, or form without the written permission of tutorialspoint.com. Failure to do so is a violation of copyright laws. This tutorial may contain inaccuracies or errors and tutorialspoint provides no guarantee regarding the accuracy of the site or its contents including this tutorial. If you discover that the tutorialspoint.com site or this tutorial content contains some errors, please contact us at [email protected] ii Table of Contents C Language Overview .............................................................. 1 Facts about C ............................................................................................... 1 Why to use C ? ............................................................................................. 2 C Programs .................................................................................................. 2 C Environment Setup ............................................................... 3 Text Editor ................................................................................................... 3 The C Compiler ............................................................................................ 3 Installation on Unix/Linux ............................................................................
    [Show full text]
  • Debug Information Validation for Optimized Code
    Debug Information Validation for Optimized Code Yuanbo Li Shuo Ding Georgia Institute of Technology Georgia Institute of Technology USA USA [email protected] [email protected] Qirun Zhang Davide Italiano Georgia Institute of Technology Apple Inc. USA USA [email protected] [email protected] Abstract and does systematic testing by comparing the debugger out- put of P 0 and the actual value of v at line s in P . We Almost all modern production software is compiled with op- hs;v i hs;v i timization. Debugging optimized code is a desirable function- have applied our framework to two mainstream optimizing C ality. For example, developers usually perform post-mortem compilers (i.e., GCC and LLVM). Our framework has led to 47 debugging on the coredumps produced by software crashes. confirmed bug reports, 11 of which have already been fixed. Designing reliable debugging techniques for optimized code Moreover, in three days, our technique has found 2 confirmed has been well-studied in the past. However, little is known bugs in the Rust compiler. The results have demonstrated about the correctness of the debug information generated the effectiveness and generality of our framework. by optimizing compilers when debugging optimized code. CCS Concepts: • Software and its engineering ! Soft- Optimizing compilers emit debug information (e.g., DWARF ware testing and debugging; Compilers. information) to support source code debuggers. Wrong de- bug information causes debuggers to either crash or to dis- Keywords: Debug Information, Optimizing Compilers play wrong variable values. Existing debugger validation ACM Reference Format: techniques only focus on testing the interactive aspect of de- Yuanbo Li, Shuo Ding, Qirun Zhang, and Davide Italiano.
    [Show full text]
  • An ECMA-55 Minimal BASIC Compiler for X86-64 Linux®
    Computers 2014, 3, 69-116; doi:10.3390/computers3030069 OPEN ACCESS computers ISSN 2073-431X www.mdpi.com/journal/computers Article An ECMA-55 Minimal BASIC Compiler for x86-64 Linux® John Gatewood Ham Burapha University, Faculty of Informatics, 169 Bangsaen Road, Tambon Saensuk, Amphur Muang, Changwat Chonburi 20131, Thailand; E-mail: [email protected] Received: 24 July 2014; in revised form: 17 September 2014 / Accepted: 1 October 2014 / Published: 1 October 2014 Abstract: This paper describes a new non-optimizing compiler for the ECMA-55 Minimal BASIC language that generates x86-64 assembler code for use on the x86-64 Linux® [1] 3.x platform. The compiler was implemented in C99 and the generated assembly language is in the AT&T style and is for the GNU assembler. The generated code is stand-alone and does not require any shared libraries to run, since it makes system calls to the Linux® kernel directly. The floating point math uses the Single Instruction Multiple Data (SIMD) instructions and the compiler fully implements all of the floating point exception handling required by the ECMA-55 standard. This compiler is designed to be small, simple, and easy to understand for people who want to study a compiler that actually implements full error checking on floating point on x86-64 CPUs even if those people have little programming experience. The generated assembly code is also designed to be simple to read. Keywords: BASIC; compiler; AMD64; INTEL64; EM64T; x86-64; assembly 1. Introduction The Beginner’s All-purpose Symbolic Instruction Code (BASIC) language was invented by John G.
    [Show full text]
  • Software Countermeasures for Control Flow Integrity of Smart Card C Codes Jean-François Lalande, Karine Heydemann, Pascal Berthomé
    Software countermeasures for control flow integrity of smart card C codes Jean-François Lalande, Karine Heydemann, Pascal Berthomé To cite this version: Jean-François Lalande, Karine Heydemann, Pascal Berthomé. Software countermeasures for control flow integrity of smart card C codes. ESORICS - 19th European Symposium on Research inComputer Security, Sep 2014, Wroclaw, Poland. pp.200-218, 10.1007/978-3-319-11212-1_12. hal-01059201 HAL Id: hal-01059201 https://hal.inria.fr/hal-01059201 Submitted on 13 Sep 2014 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Software countermeasures for control flow integrity of smart card C codes Jean-Fran¸cois Lalande13, Karine Heydemann2, and Pascal Berthom´e3 1 Inria, Sup´elec, CNRS, Univ. Rennes 1, IRISA, UMR 6074 35576 Cesson-S´evign´e, France, [email protected] 2 Sorbonne Universit´es, UPMC, Univ. Paris 06, CNRS, LIP6, UMR 7606 75005 Paris, France, [email protected] 3 INSA Centre Val de Loire, Univ. Orl´eans, LIFO, EA 4022 18022 Bourges, France, [email protected] Abstract. Fault attacks can target smart card programs in order to disrupt an execution and gain an advantage over the data or the embed- ded functionalities.
    [Show full text]