Write the syntax and explain the purpose of the following functions : Fseek() 2m Dec2005

Write the syntax and explain the purpose of the following functions : 2m Dec2005

(i) Fseek( )

Description

The C library function int fseek(FILE *stream, long int offset, int whence) sets the file position of the stream to the given offset.

Declaration

Following is the declaration for fseek() function.

[codesyntax lang="c"]

int fseek(FILE *stream, long int offset, int whence)

[/codesyntax]Parameters

• stream — This is the pointer to a FILE object that identifies the stream.
• offset — This is the number of bytes to offset from whence.
• whence — This is the position from where offset is added. It is specified by one of the following constants:

Return Value

This function returns zero if successful, else it returns nonzero value.