fgets does not read the complete tab separated line

[zahid990170]

Hi,

I have prepared a file through the use of following code

fprintf(file2, "%i\t%i\t%i\t%i\t%i\t%i\n",
							msg_id,
							msg_size,
							msg_period,
							msg_deadline,
							msg_producer,
							msg_comsumer
					);

As one can see, this file has tab separated integer entries. The file is written correctly, let us call this file "msg.txt".
I face the problem when I read this file, using fgets as follows:

char singleMessage[100];

while( fgets(singleMessage, sizeof(singleMessage), file )  )
{		
	puts(singleMessage);
	sscanf(singleMessage, "%i\t%i\t%i\t%i\t%i\t%i\n",
                          &first, &second, &third, &fourth, &fifth, &sixth);
	fprintf(stderr, "first: %d, second: %d, third: %d, fourth: %d, fifth: %d\, sixth: %d\n", 
first, second, third, fourth, fifth, sixth);
}

but fgets only retrieves until the first, i.e, if the first line in the file reads:
78 800 4 4 2 5
fgets returns only 78.

What can be the problem here,
Does it have to do with how the file was written in the first place.

thanks,

[jimblumberg]

Have you tried removing the '\t' and the '\n' characters from your sscanf(). By default the scanf() series of functions ignore leading whitespace, and they stop processing a format specifier when they encounter a whitespace.


Jim