getline confusion

atchon (3)
I am writing a quick little program to read in a file with DNA sequence and then just output just the DNA. I can get it to output the DNA how I want, but I want it to drop some header information in the file. Right before the DNA starts there is a line with "ORIGIN" so my plan was to use getline to get each line check if it has ORIGIN in it then start getting the DNA sequence.

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#include <iostream>
#include <string>
#include <fstream>

using namespace std;


int main()
{
string inputname;
string outputname;
string linein;

char nucleotide;

ifstream seqin;
ofstream seqout;


	cout << "Enter the file input name:";
	getline (cin, inputname);
	cout << "Enter the output name:";
	getline (cin, outputname);
	seqin.open(inputname.c_str());
	seqout.open(outputname.c_str());

	while(!seqin.eof())
	{
		seqin.getline(cin, linein);
		if(linein == "ORIGIN")
		{


			while(!seqin.eof())
			{
												seqin.get(nucleotide);
		if(nucleotide == 'a')
		{
			seqout << nucleotide;
		}
			if(nucleotide == 'g')
		{
			seqout << nucleotide;
		}
				if(nucleotide == 'c')
		{
			seqout << nucleotide;
		}
					if(nucleotide == 't')
		{
			seqout << nucleotide;
		}
							if(nucleotide == 'A')
		{
			seqout << nucleotide; 
		}
			if(nucleotide == 'G')
		{
			seqout << nucleotide;
		}
				if(nucleotide == 'C')
		{
			seqout << nucleotide;
		}
					if(nucleotide == 'T')
		{
			seqout << nucleotide;
		}

			}
		}
		else
		{
		}
			

	}

	seqin.close();
	seqout.close();


	 
	return 0;
}


Any help would be greatly appreciated, I haven't done much C++ programming in a couple years so quite rusty.
pyschoder (62)
line 29: instead of
seqin.getline(cin, linein);

getline(seqin, linein);
atchon (3)
That compiles fine thanks pyschoder. Any idea why it just outputs a blank file? Is it fine to have 2 whiles with eof ?
atchon (3)
nevermind I got it there were spaces on the line so it wasn't seeing it as being equal.

Thanks again pyschoder
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