Format file size comparison nicely

Also remove variables as I had something in mind I am not planning to do.

huffman.c

@@ -143,11 +143,10 @@ int main(int argc, char *argv[])
 	else {
 		ret = encode_file(input, output);
 
-		long insize = get_file_size(input);
-		long outsize = get_file_size(output);
-
-		printf("Original file size: %ld bytes\n", insize);
-		printf("Huffman file size:  %ld bytes\n", outsize);
+		printf("Original file %-15s size: %ld bytes\n",
+			   infile, get_file_size(input));
+		printf("Huffman file  %-15s size: %ld bytes\n",
+			   outfile, get_file_size(output));
 	}
 
 	fclose(input);