Computer Programming C Laboratory: File Operations C Programs

C Program using ftell(), fseek() and rewind() functions

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C Programs using File Operations - using ftell(), fseek() and rewind() functions

C Program using ftell(), fseek() and rewind() functions.

/* C Program using ftell(), fseek() and rewind() functions */

#include <stdio.h>

main()

{

/* Local definitions */

long int x = 0, m;

/* Statements */

FILE *fptr = fopen("vrb.dat", "r");

if (fptr != NULL)

{

fseek(fptr, 0L, 0); /* fseek() is a function used to position desired point */

while(x = getc(fptr) != EOF) /* check while x=getc(fptr) is not equalled to the end of file */

putchar(c);

fseek(fptr, 0L, 2);

x = ftell (fptr); /*ftell() used to specify the current position*/

printf("\n The size of the file is %d", x);

rewind(fptr); /*rewind to move control to the beginning */

x = ftell (fptr);

printf("\n The size of the file is %d", x);

} /* if */

else

printf("\n The file does not exists");

fclose(fptr); /* file close function closes a file associated with file pointer */

} /* main */

OUTPUT

vrb publishers pvt ltd.

The size of the file is 23

The size of the file is 0.

EXPLANATION: This program stores some text into the file vrb.dat, and using ftell, fseek(), and rewind() functions it displays the length of the file in concern with the file pointer.

Computer Programming C Laboratory: File Operations C Programs : Tag: C Programming : - C Program using ftell(), fseek() and rewind() functions

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Computer Programming C Laboratory: File Operations C Programs

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