-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include <stdint.h> /* We save the all the frequencies in a 64 bit int */
+#include <stdio.h> /* We extract/add them using bitshifts */
+#include <stdlib.h> /* When no filepath is specified assume stdin */
#include <string.h>
int main(int argc, char* argv[])