This function closes all the open files and returns number of files closed. It does not require any
argument.
13.4 FILE I/O
I. fprintf () This function is used for writing characters, strings, integers, floats etc. to the file. It
contains one more parameter that is file pointer, which points the opened file. Here is a program that
illustrates the use of fprintf () functions.
13.7 Write a program to open a text file and write some text using fprintfO function. Open
the file and verify the contents.
# include <stdio.h>
# include <conio.h>
main()
{
FILE *fp;
char
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