fseek

fseek moves the file pointer to a new position.

bool = fseek(fh)

bool = fseek(fh, nSeek)

bool = fseek(fh, nSeek, nOrigin)

Return Value

If the function succeeds, the return value is TRUE (1); otherwise it is FALSE (0).

Parameters

fh

Identifies the file.

nSeek

nSeek is the number of bytes from nOrigin.

nOrigin

nOrigin is one of the following values:

Value	Meaning
SEEK_CUR (1)	Current position of file pointer.
SEEK_END (2)	End of the file.
SEEK_SET (0)	Beginning of file (default value).

Example

fh = fopen("c:/test.bin", "w+");
// write 100 short values
fwrite(fh, "int16", 1:100);
print fseek(fh, -100, SEEK_CUR);
// read 50 short values
rvValues = fread(fh, "int16", 50);
fclose(fh);
print rvValues';

History

Version	Description
5.3.0	nSeek can be larger than 32 bit.

See also

Overview Binary and Text Files, fopen, ftell

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