What is the use of fseek () function explain its syntax?

What is the use of fseek () function explain its syntax? The fseek() function is used to set the file pointer to the specified offset. It is used to write data into file at desired location. Syntax: int fseek(FILE *stream, long int offset, int whence)

What is the use of fseek () and rewind () function? The rewind() function repositions the file pointer associated with stream to the beginning of the file. A call to the rewind() function is the same as: (void)fseek(stream, 0L, SEEK_SET); except that the rewind() function also clears the error indicator for the stream.

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

Is Fseek standard C? fseek is a C function belonging to the ANSI C standard library, and included in the file stdio. h. Its purpose is to change the file position indicator for the specified stream. Because fseek uses 32 bit values on many platforms it has a limitation of maximum 2 gigabyte seeks.

What is the use of fseek () function explain its syntax? – Additional Questions

What is return type of Fseek?

The fseek() or fseeko() function returns 0 if it successfully moves the pointer. A nonzero return value indicates an error.

What is read return C?

The read() function reads data previously written to a file. If any portion of a regular file prior to the end-of-file has not been written, read() shall return bytes with value 0.

What is a buffer in C?

C language’s use of a buffer

C uses a buffer to output or input variables. The buffer stores the variable that is supposed to be taken in (input) or sent out (output) of the program. A buffer needs to be cleared before the next input is taken in.

What is Size_t in C language?

The datatype size_t is unsigned integral type. It represents the size of any object in bytes and returned by sizeof operator. It is used for array indexing and counting. It can never be negative. The return type of strcspn, strlen functions is size_t.

How many bytes is a char?

1 byte

Which of the following is not accepted in C?

6. Which of following is not accepted in C? Explanation: None.

Why Fseek should be preferred over rewind?

Answer & Solution

Solution: In C, the function fseek() can be used to check if the specified operations are done successfully. So, fseek() is preferred over rewind().

What is FEOF in C?

C library function – feof()

The C library function int feof(FILE *stream) tests the end-of-file indicator for the given stream.

Why do we need Fseek?

fseek() is a very useful function to traverse through a file. We can ‘seek’ to different locations, by moving the file pointer. This enables us to control where we can read and write to and from files.

What is offset in C?

Description. The C library macro offsetof(type, member-designator) results in a constant integer of type size_t which is the offset in bytes of a structure member from the beginning of the structure. The member is given by member-designator, and the name of the structure is given in type.

What is rewind in C?

(Rewind File) In the C Programming Language, the rewind function sets the file position to the beginning of the file for the stream pointed to by stream. It also clears the error and end-of-file indicators for stream.

What is fwrite in C?

C library function – fwrite()

The C library function size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream) writes data from the array pointed to, by ptr to the given stream.

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