🚀 go-pugleaf

sg7248613@omega.ntu.ac.sg wrote:
> 
> I have been trying to read a section of data from a file for days.
> 
> The data segment goes like this:
>     .....
>     Patch norm0 4 { { 0 -1 0 } { 0 -1 0 } { 0 -1 0 } { 0 -1 0 } }
>     Patch vert0 4 { { 0 1 0 } { 1 1 0 } { 1 1 1 } { 0 1 1 } }.
>     .....
> My actual code segment is as follows:
> 
> fscanf(meshf, "    Patch %s %d { { %f %f %f } { %f %f %f } { %f %f %f }\
>             { %f %f %f } }\n    Patch %s %d { { %f %f %f } { %f %f %f }\
>             { %f %f %f } { %f %f %f } }\n", pptr->nname, &(pptr->numVert),
>             &tmpf[0], &tmpf[1], &tmpf[2], &tmpf[3], &tmpf[4], &tmpf[5],
>             &tmpf[6], &tmpf[7], &tmpf[8], &tmpf[9], &tmpf[10], &tmpf[11],
>             pptr->vname, &tmpi,
>             &tmpg[0], &tmpg[1], &tmpg[2], &tmpg[3], &tmpg[4], &tmpg[5],
>             &tmpg[6], &tmpg[7], &tmpg[8], &tmpg[9], &tmpg[10], &tmpg[11]);
> 
> The read of the first line is OK. But I can't scanf the second line
> successfully. Could anyone please enlighten me on this? Thank you!

I suspect that the problem is in the trailing '\n' character, but fscanf 
syntax is always messy.  If you leave out the trailing '\n', the leading 
spaces in the format string will cause the program to skip over any white 
space, including newlines.

***BUT***

Where your records are newline-delimited I normally find it easier to 
read in a line at a time with fgets() and then parse it with sscanf()

e.g.

{
	#define RECSIZE 80 /* or whatever will be big enough */
	char buff[RECSIZE];

	/* error handling left out for brevity */
	fgets(buff, RECSIZE, meshf);
	sscanf( buff, ".....", ..... );

}

-- 
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Michael Smith                                       msmith@mpx.com.au
Emmenjay Consulting                 http://www.hutch.com.au/~emmenjay
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