fprintf to text file

Ok, I've got a text file say like below:

Imperial Imperial
1 0001010000000000000000000000 5000
0 0
ROOF BASICS
22 96.000000 0.463648 0.000000 12.000000 12.000000 1 1 1
4.163119 4.163119 3.500000 3.500000 3.500000 3.500000
0.250000 0.250000 24.000000
0.000000 0.000000


Two things are causing me a problem. I'm not sure if the problem is being caused by my \n or what but if anyone can offer any suggestions, that would be great.

1) If I change the 22 to 3 in line five, I close the file and wind up with 32. How can I get rid of the 2 and truncate the remainding text to allow only one space between data.
2) When I modify line six, I end up with line seven missing 0 in 0.2500000 (looking like .2500000)

Thanks,
Ray Schmidt

Code:

void CPeekaViewDlg::OnSave() 
{
	UpdateData(TRUE);
	
	FILE *stream;
	char s[255];
	char file[100];
	char getl[100],getl2[100];
	int i=74,skipper=0,z=0,hb=0;

	//select & open file
	if(m_quote == 0)
	{
		// Quote Directory
		sprintf(file,"c:/mydocu~1/programming/peekaview/%s.tre",m_truss);
		//sprintf(file,"j:/mitek/quote/%s/%s.tre",m_job,m_truss);
		if( (stream  = fopen(file,"r+")) == NULL )
		{
			MessageBox("    Trusses Not Found!\nFill In The Information Below", "Error", MB_ICONEXCLAMATION);
			return;
		}	
	}
	if(m_quote == 1)
	{
		// Production Directory
		sprintf(file,"c:/mydocu~1/programming/peekaview/debug/%s.tre",m_truss);
		//sprintf(file,"j:/mitek/prod/%s/%s.tre",m_job,m_truss);
		if( (stream  = fopen(file,"r+")) == NULL )
		{
			MessageBox("    Trusses Not Found!\nFill In The Information Below", "Error", MB_ICONEXCLAMATION);
			return;
		}	
	}
	
	
	//quanity
	fseek(stream, i, SEEK_SET);
	fscanf(stream,"%s",s);
	skipper = strlen(s);
	z = i + skipper + 1;
	fseek(stream, z, SEEK_SET);
	fgets(getl,55,stream);
	fseek(stream, z+56, SEEK_SET);
	fgets(getl2,54,stream);
	m_qty == &m_changeqty;
	i = 75;
	fseek(stream, i, SEEK_SET);
	if(strlen(m_changeqty)==1)
	{
		fprintf(stream, "%s", m_qty);
	}
	if(strlen(m_changeqty)>1)
	{
		fprintf(stream, "%s%s\n", m_qty, getl);
		fseek(stream, z+55, SEEK_SET);
		fprintf(stream, "\n%s\n", getl2);
	}
	if(strlen(m_changeqty)>2)
	{
		fprintf(stream, "%s%s\n", m_qty, getl);
	}
	
	fclose(stream);
	m_workc = getl2;	
	UpdateData(FALSE);
}

You are trying to process the file as a binary file, but the format of the file is sequential text. There is another thread from recently that goes over processing a file in binary...I wont rehash it here. I think the thread is called "Deleting/Searching Directly File I/O", it is about a page back if you look for it.

here is a link to the mentioned thread:

Deleting/Searching Directly File I/O

There is a wealth of file i/o information here on the boards, a quick search may prove to be all you need.