Bioinformatics

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# Bioinformatics - PowerPoint PPT Presentation

Practical Getting started with Perl. Bioinformatics. Dr. Aladdin Hamwieh Khalid Al- shamaa Abdulqader Jighly. Aleppo University Faculty of technical engineering Department of Biotechnology. 2010-2011. Basics. Command Line Text File Inputs &amp; Outputs Variables (\$) &quot; &quot; and ' '

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Presentation Transcript

Practical

• Getting started with Perl

### Bioinformatics

Aleppo University

Faculty of technical engineering

Department of Biotechnology

2010-2011

Basics
• Command Line
• Text File
• Inputs & Outputs
• Variables (\$)
• " " and ' '
• New Line (;)

First Code

# first test

print "hi everybody! \n";

\$name = <STDIN>;

print "Hi \$v";

exit 0;

Basic arithmetic operators
• Operator Function

- Subtraction

* Multiplication

/ Division

% Modulus (remainder)

** Exponent (to the power of)

++ Increment

-- Decrement

Basic arithmetic operators
• \$v = 4;
• \$a = 2 + 3;
• print "\\$a = \\$a \n";
• \$a = \$a -1;
• \$a -= 1;
• \$a--;
• print "\$a \n";
• \$x = 2 + 3;
• print '\\$x = \$x \n';
Note

12/3*4=16

BUT

12/(4*3)=1

order of precedence

Operator

**

/

*

%

+

-

Training
• Input:
• n
• Output:
• X
Homework

X

• Inputs:
• Height (X)
• Width (Y)
• Outputs:
• Perimeter
• Area

Y