diff --git a/CMakeLists.txt b/CMakeLists.txt
index b17af59..4d5405c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,6 +21,8 @@ add_executable(skola calc.c
         bomba.c
         bomba.h
         do_while_znak.c
-        do_while_znak.h)
+        do_while_znak.h
+        for.c
+        for.h)
 
 target_link_libraries(skola m)
diff --git a/calc.c b/calc.c
index 0eb6c17..662efca 100644
--- a/calc.c
+++ b/calc.c
@@ -1,8 +1,17 @@
 #include "stdio.h"
 #include "calc.h"
+
+//#define DOWHILE
+
 int calc(){
     char pokracovat = 'a';
+    #ifndef DOWHILE
     while (pokracovat == 'a') {
+    #endif
+    #ifdef DOWHILE
+        do {
+    #endif
+
         double a = 0;
         double b = 0;
         char operacia = 0;
@@ -32,12 +41,14 @@ int calc(){
                 break;
 
             default:
-                printf("Nesprávna operácia.\nPrajete si pokračovať(a/n)?\n");
-                scanf("%s", &pokracovat);
+                printf("Nesprávna operácia.\n");
         }
         printf("Vysledok %f %c %f je: %f.\nPrajete si pokračovať(a/n)?\n", a, operacia, b, vysledok);
         scanf("%s", &pokracovat);
     }
+    #ifdef DOWHILE
+    while(pokracovat == 'a');
+    #endif
     return 0;
 
 }
\ No newline at end of file
diff --git a/for.c b/for.c
new file mode 100644
index 0000000..a6f945e
--- /dev/null
+++ b/for.c
@@ -0,0 +1,17 @@
+//
+// Created by bruno on 12/18/23.
+//
+
+#include "for.h"
+#include "stdio.h"
+
+int for_cyklus(){
+    int target;
+    
+    printf("Do akého čísla počítať?");
+    scanf("%d", &target);
+
+    for(int i = 1; i <= target; i++){
+        printf("%d\n", i);
+    }
+}
\ No newline at end of file
diff --git a/for.h b/for.h
new file mode 100644
index 0000000..89f076f
--- /dev/null
+++ b/for.h
@@ -0,0 +1,6 @@
+//
+// Created by bruno on 12/18/23.
+//
+
+
+int for_cyklus();
\ No newline at end of file
diff --git a/main.c b/main.c
index ffac919..857f1be 100644
--- a/main.c
+++ b/main.c
@@ -1,5 +1,5 @@
-#include "calc.h"
+#include "for.h"
 
 int main(){
-    return calc();
+    return for_cyklus();
 }
\ No newline at end of file