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C - Writing a file on Disk

In our last article, we have explained how to read an existing file on the disk. In this tutorial, we are going to explain how to write to a file on disk. For this, the C language provides us a structure called FILE, which is defined in the header file <conio.h>. The FILE structure allows us to create, read, write/modify the file on disk.

The FILE structure provides us a function named fopen(), using which we could provide location of the file stored on the disk and in return(if the file is found), the fopen() function open the file and gives us a pointer which is pointed at the position where the first character has to be written in the file.

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