Engineering problem solving with c
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Engineering Problem Solving with C. Fundamental Concepts Chapter 1 Engineering Problem Solving. Computing Systems: Hardware and Software. A computer is a machine designed to perform operations specified with a set of instructions called a program.

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Engineering Problem Solving with C

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Engineering problem solving with c

Engineering Problem Solving with C

Fundamental Concepts

Chapter 1

Engineering Problem Solving

Etter/Ingber


Computing systems hardware and software

Computing Systems: Hardware and Software

  • A computer is a machine designed to perform operations specified with a set of instructions called a program.

  • Hardware refers to the computer equipment.

    • keyboard, mouse, terminal, hard disk, printer

  • Software refers to the programs that describe the steps we want the computer to perform.

Etter/Ingber


Computer hardware

Computer Hardware

  • CPU - Central processing unit

  • ALU - Arithmetic and logic unit

  • ROM - Read only memory

  • RAM - Random access memory

Internal

Memory

External

Memory

CPU

Processor

Input

Output

ALU

Etter/Ingber


Computer software

Computer Software

  • Operating System - Provides an interface with the user

    • unix, windows, linux, ...

  • Software Tools

    • word processors (MicrosoftWord, WordPerfect, ...)

    • spreadsheet programs (Excel, Lotus1-2-3, ...)

    • mathematical computation tools (MATLAB, Mathematica, ...)

  • Computer Languages

    • machine language

    • assembly language

    • binary language

    • high level languages (C, C++, Ada, Fortran, Basic, java)

Etter/Ingber


Executing a computer program

Executing a Computer Program

Input data

  • Compiler

    • Converts source program to object program

  • Linker

    • Converts object program to executable program

Compile

Machine

language

program

Link/load

Execute

C language

program

Program

output

Etter/Ingber


Key terms

Key Terms

  • Source Program

    • printable/Readable Program file

  • Object Program

    • nonprintable machine readable file

  • ExecutableProgram

    • nonprintable executable code

  • Syntax errors

    • reported by the compiler

  • Linker errors

    • reported by the linker

  • Execution/Run-time errors

    • reported by the operating system

  • Logic errors

    • not reported

Etter/Ingber


The c programming language

The C Programming Language

  • General purpose, machine-independent language

  • Developed at Bell Labs in 1972 by Dennis Ritchie

  • American National Standards Institute(ANSI) approved ANSI C standard in 1989

Etter/Ingber


An engineering problem solving methodology

An Engineering Problem-Solving Methodology

  • 1. PROBLEM STATEMENT

  • 2. INPUT/OUTPUT DESCRIPTION

  • 3. HAND EXAMPLE

  • 4. ALGORITHM DEVELOPMENT

  • 5. TESTING

Etter/Ingber


First program sum two numbers

First Program - sum two numbers

/******************************************************************/

/* Program chapter1 */

/* */

/* This program computes the sum two numbers */

#include <stdio.h>

int main(void)

{

/* Declare and initialize variables. */

double number1 = 473.91, number2 = 45.7, sum;

/* Calculate sum. */

sum = number1 + number2;

/* Print the sum. */

printf(“The sum is %5.2f \n”, sum);

/* Exit program. */

return 0;

}

/***************************************************************************/

Etter/Ingber


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