C program to illustrate as to how the data stored on the disk is read

/*Write a C program to illustrate as to how the data stored on the disk is read */

#include <stdio.h>
#include <stdlib.h>

void main()
{
FILE *fptr;
char filename[15];
char ch;

printf("Enter the filename to be opened\n");
gets(filename);

fptr = fopen (filename, "r");  /*open for reading*/

if (fptr == NULL)
{
printf("Cannot open file\n");
exit(0);
}

ch = fgetc(fptr);

while (ch != EOF)
{
printf ("%c", ch);
ch = fgetc(fptr);
}

fclose(fptr);
}   /* End of main () */
/*----------------------------------------------
Output
Enter the filename to be opened
emp.rec
Name    = Prabhu
Age     = 25
Salary  = 25000.00
------------------------------------------------*/