long get_file_size(char *fname)
long get_file_size(const char *fname)
long get_file_size(char *fname){	FILE *fp = U7open (fname, "rb");	if (!fp) {		cerr << "Could not open file " << fname << endl;		exit(1);	}	fseek(fp, 0, SEEK_END);	long len = ftell(fp);	fclose(fp);	return len;}