FILE-level: ftell/fseek, fgetpos/fsetpos
handle-level: lseek
pos_type tellp();
Don't store pointers in files, it makes no sense.
Call functions fread, then function fseek, then function fwrite.
Functions_used_for_manipulation_of_file_pointers_are_as_follows:">Functions used for manipulation of file pointers are as follows:seekg():_Moves_get_pointer_(input)_to_a_specified_location.">seekg():Moves get pointer (input) to a specified location.seekp():_Moves_put_pointer_(output)_to_a_specified_location.">seekp():Moves put pointer (output) to a specified location.tellg():_Gives_the_current_position_of_the_get_pointer.">tellg():Gives the current position of the get pointer.tellp():_Gives_the_current_position_of_the_put_pointer.">tellp():Gives the current position of the put pointer.The seekg & tellg functions are associated with get pointer and seekp & tellp functions are associated with put pointer.
A file pointer is an opaque object that refers to a file. Opaque means that you should not attempt to delve into its specific value, other than to use it as a file pointer. FILE *fp; /* fp is the file pointer */ fp = fopen("somefile.txt"); if (fp == NULL) ...{exception}... fprintf(fp, "Hello somefile.txt"); fclose(fp);
The function ftell returns the position of the file pointer for a file.
tellp()
pos_type tellp();
The function fread() in C can be used to read a specified number of elements from a file. It takes as arguments the pointer to the buffer, size of each element, number of elements to read, and the file pointer.
Don't store pointers in files, it makes no sense.
Call functions fread, then function fseek, then function fwrite.
Your process' file pointer has nothing to do with the other process' file pointer.
Functions_used_for_manipulation_of_file_pointers_are_as_follows:">Functions used for manipulation of file pointers are as follows:seekg():_Moves_get_pointer_(input)_to_a_specified_location.">seekg():Moves get pointer (input) to a specified location.seekp():_Moves_put_pointer_(output)_to_a_specified_location.">seekp():Moves put pointer (output) to a specified location.tellg():_Gives_the_current_position_of_the_get_pointer.">tellg():Gives the current position of the get pointer.tellp():_Gives_the_current_position_of_the_put_pointer.">tellp():Gives the current position of the put pointer.The seekg & tellg functions are associated with get pointer and seekp & tellp functions are associated with put pointer.
A file pointer is an opaque object that refers to a file. Opaque means that you should not attempt to delve into its specific value, other than to use it as a file pointer. FILE *fp; /* fp is the file pointer */ fp = fopen("somefile.txt"); if (fp == NULL) ...{exception}... fprintf(fp, "Hello somefile.txt"); fclose(fp);
writes data to a FILE* stream.
It is a collection of various fuction in which we can define many function in Libaray file .
Header file is a file which is meant to be included into another file during compilation. Examples: string.h, stdio.h, inttypes.h. Header pointer is a pointer to an object called header (for example header of a linked list).