31 lines
958 B
Plaintext
31 lines
958 B
Plaintext
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The job is to read FASTA file and count how many A, C, T, G letters are in an example sequence.
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FASTA one can get from the internet. We can use e.g. wiki page to get one sequence:
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https://en.wikipedia.org/wiki/FASTA_format
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The FASTA format with one sequence for an elephant looks like this:
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>gi|5524211|gb|AAD44166.1| cytochrome b [Elephas maximus maximus]
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LCLYTHIGRNIYYGSYLYSETWNTGIMLLLITMATAFMGYVLPWGQMSFWGATVITNLFSAIPYIGTNLV
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EWIWGGFSVDKATLNRFFAFHFILPFTMVALAGVHLTFLHETGSNNPLGLTSDSDKIPFHPYYTIKDFLG
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LLILILLLLLLALLSPDMLGDPDNHMPADPLNTPLHIKPEWYFLFAYAILRSVPNKLGGVLALFLSIVIL
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GLMPFLHTSKHRSMMLRPLSQALFWTLTMDLLTLTWIGSQPVEYPYTIIGQMASILYFSIILAFLPIAGX
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IENY
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The FASTA format has to separate parts:
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1. header
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2. sequence
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Thus, the excercise for reading FASTA file briefly looks like this:
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1. Select sequence and save it to a file, e.g. seq.fasta
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2. Open the file seq.fasta in C with fopen:
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https://cplusplus.com/reference/cstdio/fopen/
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Tip: Use correct mode.
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