Overview

In this example, you will learn how to write to a file

Example Code

Output

A file called "filename.txt"

Decode

>> Line 4: open(WRITE, ">>filename.txt") ;

This command opens (or creates a new file if it doesn't exist) a file called "filename.txt" for writing content into that file

filename.txt can be any file name and format. eg, it can be webstie.html .

Later on , you will use WRITE to write content into the file. WRITE can also be any name of your choosing. It can be OUTPUT or WRTIETOFILE etc.

>> Line 7,8,9: Write text to the file

print WRITE " STRING" ; will add the STRING into the file.

>>Line 14: close (WRITE)

closing the file after finishing writing.

Exercise Seven

>> $sequence="aattgtgagcggataacaattgacattgtgagcggataacaagatactgagcactactagagaaagaggagaaatactagatggtgagcaagggcgagga
gctgttcaccggggtggtgcccatcctggtcgagctggacggcgacgtgaacggccacaagttcagcgtgtccggcgagggcgagggcgatgccacctac
ggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctgacctggggcgtgcagtgcttcagcc
gctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgtccaggagcgcaccatcttcttcaaggacgacggcaacta
caagacccgcgccgaggtgaagttcgagggcgacaccctggtgaaccgcatcgagctgaagggcatcgacttcaaggaggacggcaacatcctggggcac
aagctggagtacaactacatcagccacaacgtctatatcaccgccgacaagcagaagaacggcatcaaggccaacttcaagatccgccacaacatcgagg
acggcagcgtgcagctcgccgaccactaccagcagaacacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacccagtccgc
cctgagcaaagaccccaacgagaagcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcggcatggacgagctgtacaagtaa
taatactagagccaggcatcaaataaaacgaaaggctcagtcgaaagactgggcctttcgttttatctgttgtttgtcggtgaacgctctctactagagt
cacactggctcaccttcgggtgggcctttctgcgtttata"

print this sequence into a file called "sequence.txt" .