Thread: file problem

Well your indentation could be better for starters. It might look OK in your editor which can intelligently interpret mixes of spaces and tabs, but the result is a mess when posted on the board. Change the editor to only indent using spaces.

Second, trying to update a text file in-place is not really do-able. It's much easier to simply read in the string from the old file, and write out the string to the new file.

Third, your seek only seeks 1 char (not the whole line), and the char you write is probably not what you expect.

Fourth, having modified temp with temp[i] = ' '; you may as well stick with it. Copying it to finish doesn't add much.

Code:

    	   if( temp[79] == '\n' ){
               temp[80] == '0';
           }

This can never be true - the last element of an array passed to fgets() will either be undefined or \0
Furthermore, your attempt to modify temp[80] is both out of bounds of the array, and is a useless comparison (==), not an assignment.
It's also a waste of effort, since fgets() always appends a \0 anyway.

> for( i = 0; i < 80; i++){
Where is it written that every line fills the buffer
for ( i = 0 ; temp[i] != '\0'; i++ )
examines only the valid characters.

Finally, watch the precedence of && and ||
I doubt your conditional does what you want it to.

Simplify the code by writing an "isPunct()" function to do most of what that bulky if statement does.

Code:

if ( isPunct( temp[i]) ) {
  temp[i] = ' ';
}