Here is source code of the C Program to find the size of file using file handling function. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

/*
* C Program to Find the Size of File using File Handling Function
*/
#include <stdio.h>

void main(int argc, char **argv)
{
FILE *fp;
char ch;
int size = 0;

fp = fopen(argv[1], "r");
if (fp == NULL)
printf("\nFile unable to open ");
else
printf("\nFile opened ");
fseek(fp, 0, 2); /* file pointer at the end of file */
size = ftell(fp); /* take a position of file pointer un size variable */
printf("The size of given file is : %d\n", size);
fclose(fp);
}


$ vi file10.c
$ cc file10.c
$ a.out myvmlinux

File opened The size of given file is : 3791744