Difference between revisions of "FSEEK()"
Yvonnemilne (Talk | contribs) |
Helengeorge (Talk | contribs) (→Class) |
||
| Line 1: | Line 1: | ||
| − | |||
| − | |||
Revision as of 15:21, 27 October 2009
Purpose
Function to position to a byte offset within a text file
Syntax
FSEEK(<expN1>, <expN2>, <expN3>)
See Also
FCLOSE(), FCREATE(), FERROR(), FGETS(), FREAD(), FREADSTR(), FWRITE()
Description
The FSEEK() function is used to position to a byte offset within a text file. The <expN1> is a valid file handle returned from the FOPEN() function. The <expN2> is the byte offset position to move the file pointer based on value defined by <expN3>. This can be a positive or negative number depending on the direction of pointer movement. The <expN3> defines the positions from which to start the byte offset, and can be any of the following three options:
| Offset | Description |
|---|---|
| 0 | Start from start of file |
| 1 | Start from current position |
| 2 | Start from EOF |
FSEEK() returns the new position of the file pointer relative to the beginning of the file. The beginning of the file is 0 regardless of the direction of movement.
Example
fp = fopen("names.txt") string = fgets(fp) fseek(fp, 1024,0)
Products
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
