The task of saving data in the form of input or output created by running C programmes in data files, meaning a text file or a binary file, for future reference and analysis is referred to as file handling in C.
In the C programming language, the following operations are done on files... A file is being created (or opened). Data from a file is being read. Creating a file with data. The act of putting an end to a document.
The fopen () function creates a new file or opens one that already exists. The fclose () function closes a file that has been opened. The getw () method is used to read an integer from a file.
A file is simply memory space in which data is saved. The following syntax is used to create a file in a 'C' programme: fp = fopen ("file name", "mode"); FILE *fp; fp = fopen ("file name", "mode"); The file is a data structure declared in the standard library in the above syntax. The fopen function is a standard function for opening files.
A file pointer is a type of pointer that is used to manage and track the files that are being accessed. To declare a file pointer, a new data type called "FILE" is utilised.