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http://www.ece.uah.edu/cpe112-online |
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http://www.ece.uah.ece/courses/cpe112 |
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http://www.jbpub.com/dale |
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Programming is telling computers what to do in a
language they understand (instructions) |
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Writing a program is done in two phases: |
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Problem solving |
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Analysis & specification |
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Algorithm |
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Verification |
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Implementation |
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Program |
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Testing |
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An algorithm is a step-by-step procedure for
solving a problem in a finite amount of time. |
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Insert the key |
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Make sure the transmission is in Park (or
Neutral) |
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Depress the gas pedal (and clutch) |
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Turn the key to the start position |
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If the engine starts within six seconds, release
the key to the ignition position. |
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If the engine doesn’t start in six seconds,
release the key, gas pedal (and clutch), wait ten seconds, and repeat steps
3 through 6, but not more than five times. |
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If the car doesn’t start, call the garage. |
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Algorithms get translated into computer
programs. |
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A programming language is a simplified (not
necessarily easy to use) form of English that adheres to a strict set of
grammatical rules. |
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Algorithms may be translated |
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into different languages |
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by different people in different ways (styles) |
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Documentation is an important part of the
programming process. |
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Machine language – sequences of 1s and 0s one
computer understands |
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Assembly language – low-level language (closer
to human understanding) translated to one machine language by an assembler |
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High-level language – language close to English
(C++ is one of them) which may be translated to many different machine
languages by compilers |
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Sequential Processing (default) |
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Selection (pick one of multiple choices) |
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Loop (do things again and again) |
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Subprogram (pass control over to another piece
of code) |
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Software Piracy – It is illegal to copy software
without the permission of its creator. |
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Privacy of Data – A computing professional has a
responsibility to avoid taking advantage of special access that he or she
may have to confidential data. |
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Use of Computer Resources – Computing
professionals have an ethical responsibility never to use computer
resources without permission. |
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Software Engineering – Programmers have a
responsibility for developing software that is free from errors. |
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Change Directory cd <directory name> |
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e.g. cd MYDOC (change to directory MYDOC) |
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cd (change to the home directory) |
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cd .. (change to the parent directory) |
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List content of current directory ls |
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e.g. ls MYDOC |
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Display current working directory pwd |
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Make a new directory mkdir <directory name> |
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Delete a
directory rmdir <directory
name> |
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Rename a file mv <source> <destination> |
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e.g. mv myfile.cpp
dinner.cpp |
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Delete a file rm <filename) |
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Copy a file cp <source>
<destination> |
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Compile a file CC <source> -o
<destination> |
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e.g. CC dinner.cpp –o dinner |
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(CC is capital and o is lower case) |
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Shortcut to repeat a command !<first character of previous
command> |
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e.g. !C to repeat the CC compile command |
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Always create a new directory to place all
downloaded files, move all files to this directory, and your working
directory to it. |
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Create new files using the text editor available
from the graphical interface. |
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To go to the line where there is a compiler
error, in the editor window click on options in menu and select status line. To go a line, just type in the line
number in the box and enter. |
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Machines are available for your use in eb246, eb
216, and S122 in Tech Hall. |
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Notes