Which of the following functions manipulate the value of file position indicator ? (a) ftell( ) (b) fgetpos( ) (c) rewind( ) (d) fgetc( ) Codes :
(a), (b) and (c) are correct.
In this question, we need to identify which functions manipulate the value of the file position indicator in the context of file handling in programming, specifically in C language.
ftell()function: This function returns the current file position indicator for the specified stream. It does not modify the value but allows us to query it to know the current position. Hence, it is known to work with the file position indicator indirectly.fgetpos()function: This function gets the current position of the file position indicator and stores it in an object of typefpos_t. It directly interacts with the file position indicator.rewind()function: This function sets the file position indicator to the beginning of the file, thereby modifying its value. This function directly manipulates the file position indicator to reset it.fgetc()function: This function reads a character from the file and advances the file position indicator to the next position. Although it causes the file position indicator to move, its primary purpose is to read a character, not to manipulate the position indicator directly through position settings.
Thus, the functions ftell(), fgetpos(), and rewind() are related to manipulating or interacting with the file position indicator.
Hence, the correct answer is: (a), (b) and (c) are correct.
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