Re: sscanf

[mavram]

On Mon, Apr 04, 2005 at 06:39:52AM -0500, bertrand roessli wrote:
> Hello,
> 
> I cannot find a way to read from a file a line 
> that contains both numbers and characters (the length of the 
> line might vary).
> 
> e.g.: 
> 
> if the line reads
> 
> ctave:1> a='1 2 dsf sdaf'
> a = 1 2 dsf sdaf
> 
> then 
> octave:2> [c,v]=sscanf(a,'%f%10c',"C")
> c = 1
> v =  2 dsf sda
> 
> works but 
> octave:3> [c,v]=sscanf(a,'%f%100c',"C")
> c = 1
> v = [](0x0)
> 
> and 
> [c,v]=sscanf(a,'%f%100s',"C")
> c = 1
> v = 2
> 
> Thank for help,
> 
> B. Roessli
> 
> -- 
> Dr. Bertrand Roessli
> Laboratory for Neutron Scattering
> ETHZ and Paul Scherrer Institut
> CH-5232 Villigen, PSI
> 
> 
> 
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> 
Hi,
If I understood correctly your letter the answer is the function
fgetl:
645~> fid=fopen("file","t")
error: invalid mode specified
error: fopen: internal error
error: evaluating assignment expression near line 2, column 4
646~> fid=fopen("file","rt")
fid =
{
  id = 3
  name = file
  mode = r
  arch = ieee_little_endian
  status = open
}
646~> fgetl(fid)   
ans = 1 2 dsf sdaf
648~> fgetl(fid)
ans = a,'%f%10c',"C"
648~> fgetl(fid)
ans = ,'%f%100c',"C"
649~> fgetl(fid)
ans = a,'%f%100s',"C"
650~> fgetl(fid)
ans = -1
651~> fclose(fid)
ans = 0

The file "file" is attached.
Cheers, Avraham

file
Description: Text document