diff --git a/du1/program.c b/du1/program.c
index 483b8f3..98fa868 100644
--- a/du1/program.c
+++ b/du1/program.c
@@ -1,14 +1,14 @@
 #define LINE_SIZE 100
-#define POCET_JEDAL 100000
+#define POCET_JEDAL 100000 //macros pre velky vstupy a vystupy
 #include <string.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include <stdio.h>
-struct pizza
+struct pizza ///materialy z cvicenia
 { float prize;
 char name[LINE_SIZE];
 };
-struct pizza jedalny_listok[POCET_JEDAL];
+struct pizza jedalny_listok[POCET_JEDAL]; 
 struct pizza *prva = jedalny_listok;
 struct pizza *druha = jedalny_listok + 1;
 struct pizza *tretia = &jedalny_listok[2];
@@ -20,7 +20,7 @@ char hacker_script(char c) {
 
     
     if (isupper(c)) {
-        return (char) tolower(c);
+        return tolower(c);
     }