Reading line by line using C

[Henry Chua]

Hi guys,

Is there a way to write a c program to read a textfile line by line and also field by field seperated by a seperator i.e. like awk.

Best regards
Henry

[A. Clay Stephenson · Accepted solution]

The fgets() function will read until it 1) encounters a linefeed, 2) reaches EOF, or 3) fills the buffer you specify with the 'n' (2nd) parameter. The file pointer is left unchanged so the next call to fgets() will read the next line. Man fgets for details.

To parse a line of text after reading it in with fgets() use strtok() or sscanf(). Man strtok, scanf for details.

[Biswajit Tripathy]

As A Clay Stephenson said, use fgets() followed
by strtok(). Be very careful while using
strtok(), it's a little tricky if you have not
used it before.

Another possible (and simpler) option is
strchr() instead of strtok(). See manpage for
more detail.

- Biswajit

[Henry Chua]

thanks guys, your suggestion works great.!