find number of bytes from a file

#include<stdio.h>

void file(char*);

int main()

{

char filename[]="C:\\Documents and Settings\\Administrator\\My Documents\\a.txt";

char (*newfile)();

newfile=file;

newfile(filename);

system("pause");

return 0;

}

void file(char *filename)

{

int length=0;

FILE *fptr;

fptr=fopen(filename,"r");

if(fptr==NULL)printf("error in file");

else

{

fseek(fptr,0,SEEK_END);

length=ftell(fptr);

}

printf("%d bytes in the file",length);

}