Reading multiple files in C

**anjanaanupindi** · 10-01-2007

I have the following problem: My program is supposed to read data from files to an array. The files are numbered: capture[1].bmp,capture[2].bmp and so on. There are 24 of those files, and I really don't want to do the same step 24 times. Is there a way to write a loop along the lines of

Code:

for (int i=1; i<25, i++);
{
fp=fopen("capture[i].bmp", "rb");

fread(&ch,sizeof(ch),1,fp);
	
.....
}

In other words, is there a way to insert the "i" variable into the filename?

Thank you for your insights.

**Salem** · 10-01-2007

Code:

for (int i=1; i<25, i++)
{
char fn[100];
sprintf(fn,"capture&#37;d.bmp", i );
fp=fopen(fn, "rb");

fread(&ch,sizeof(ch),1,fp);
	
.....
}

Use sprintf() to generate the filename.

**matsp** · 10-01-2007

If the files have the names as given in the original post, I suppose:

Code:

sprintf(fn,"capture[%d].bmp", i );

would be what original poster wanted.

--
Mats

**anjanaanupindi** · 10-01-2007

thanks for ur replies...............

but if that is the case............where can i specify the path name

**matsp** · 10-01-2007

In the sprintf statement, perhaps?

--
Mats

**Happy_Reaper** · 10-01-2007

Example :

sprintf(fn,"/usr/home/capture%d.bmp".i)

say you loop through that with i having a value of 0, 1, and 2.
fn, then, in turn, will have :

/usr/home/capture0.bmp
/usr/home/capture1.bmp
/usr/home/capture2.bmp

That should get you what you want. Also, you may need to put in some escape characters like '\\' depending on what platform you're using.

**anjanaanupindi** · 10-03-2007

Thanks for ur reply..............it's working

**Salem** · 10-03-2007

Can you cut out the "ur" kiddie English and repeated dots - thanks.

**anjanaanupindi** · 10-03-2007

ok,thanks for your suggestion

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