How can I find specified string from a file?

Hi,

What kind of file is it. How ist it internally organized.
Is it binary or ASCII text, is it separated by linefeeds ?
Would you prefer C or C++.

For structured reading you could use fread / fwrite,
for newline separated info you could use fgets.

There are so many ways to do that, please give us some more
details.

cu

Peter