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Computer Programming. Topic 1 Introduction to Programming. Objectives. Define the terminology used in programming Explain the tasks performed by a programmer Describe the qualities of a good programmer Understand the employment opportunities for programmers and software engineers

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computer programming

Computer Programming

Topic 1 Introduction to Programming

objectives
Objectives
  • Define the terminology used in programming
  • Explain the tasks performed by a programmer
  • Describe the qualities of a good programmer
  • Understand the employment opportunities for programmers and software engineers
  • Become aware of structured design
programming a computer
Programming a Computer
  • Programs are the directions given to computers
  • Programmers are the people who write computer programs
  • Programming Languages enable programmers to communicate with the computer
    • Popular languages: C++, Visual Basic, C#, Java
the programmer s job
The Programmer’s Job
  • Programmers help solve computer problems
  • Employee or freelance
  • Typical steps involved
    • Meet with user to determine problem
    • Convert the problem into a program
    • Test the program
    • Provide user manual
do i have what it takes to be a programmer
Do I Have What It Takes to Be a Programmer?
  • Qualities employers look for
    • Logical and analytical thinking
    • Close attention to detail
    • Patience and persistence
    • Ingenuity and creativity
    • Good communication skills: technical and nontechnical
    • Business skills (for managerial positions)
employment opportunities
Employment Opportunities
  • Computer software engineers: designs an appropriate solution to a user’s problem
  • Computer programmer: codes a computer solution
  • Coding is the process of translating a computer solution into a language a computer can understand
  • Some positions call for both engineering and programming
problem solving
Problem Solving
  • People solve hundreds of simple problems every day without thinking about how they do it
  • Understanding the thought process involved can help in solving more complex problems
  • You can also use a similar process to design a computer solution to a problem (computer program)
structured programming
Structured Programming
  • Structured design
    • Dividing a problem into smaller subproblems
  • Structured programming
    • Implementing a structured design
  • The structured design approach is also called:
    • Top-down (or bottom-up) design
    • Stepwise refinement
    • Modular design
implementation
Implementation

#include <iostream>

using namespace std;

int main()

{

const float KM_PER_MILE = 1.609;

float miles, kms;

cout << “Enter the distance in miles: “;

cin >> miles;

kms = KM_PER_MILE * miles;

cout << “The distance in kilometers is “ << kms << endl;

return 0;

}

testing execution debugging
Testing, Execution, Debugging

Common error sources

  • Violations of grammar rules of the high level language
  • Errors that occur during execution
  • Errors in the design of the algorithm
summary
Summary
  • Programs are step-by-step instructions that tell a computer how to perform a task
  • Structured design
    • Problem is divided into smaller subproblems
    • Each subproblem is solved
    • Combine solutions to all subproblems
bibliography
Bibliography
  • Zak, D. (2011). An Introduction to Programming with C++, 6th ed. Course Technology, Massachusetts.
  • Bronson, G.J. (2006). A First Book of C++: From Here To There, 3rd ed. Course Technology, Massachusetts.
  • Malik, D.S. (2009). Introduction to C++ Programming, Brief International ed. Course Technology, Massachusetts.
  • Friedman, F.L. & Koffman, E.B (2011). Problem Solving, Abstraction, and Design Using C++. 6th ed. Pearson Education, Massachusetts.
  • Adams, J. & Nyhoff, L. (2003). C++ An Introduction to Computing. 3rd ed. Pearson Education, New Jersey.