Compute GC content

Write a program gccontent for computing GC content for a genome.

Requirements

• Your program must read any number of files from the command line arguments, compute GC for file after file, and write them to standard out in order.
• All sequences (chromosomes and/or contigs) from a genome should be included in the analysis.
• You program must be structured so that:
  • one function is in charge of reading a genome sequence,
  • one function is computing the GC content of a sequence.

Example usage

A typical session running you program must look like this:

> ./gccontent genome1
0.406
> ./gccontent genome1 genome2 genome3
0.406
0.539
0.435
> ./gccontent genome1 genome2 genome3 | sort -n
0.406
0.539
0.435

Print using any precision you like.

To present:

1. Your well-structured and commented fcode.
2. Test runs on the five downloaded genomes.
3. Why do people care about GC content?