I was given a script for reading data from a specific file, and although the script works, I don't understand one section of it, it reads as follows:
fid = fopen(Folder);
fseek(fid,0,-1);
Linechk = strcmp(fgetl(fid),'*END*');
while Linechk == 0
Linechk = strcmp(fgetl(fid),'*END*');
end
The main aim here is to find the line where the string END appears, following the appearance of END the data is stored. The question I have is that Linechk is equal to 0 initially (i.e. before the loop), then in following the loop it is equal to 1. I can't understand why it returns 1, surely the while loop only repeats when Linechk is equal to 0 therefore how does the condition remain true when it equals 1?
Entire code:
fid = fopen(Folder);
fseek(fid,0,-1);
Linechk = strcmp(fgetl(fid),'*END*');
while Linechk == 0
Linechk = strcmp(fgetl(fid),'*END*');
end
n = 1;
while 1;
tline = fgetl(fid);
if ~ischar(tline), break, end;
data(n,:) = sscanf(tline,'%f');
n = n+1;
end
fclose(fid);
