diff --git a/du3/program.c b/du3/program.c
index 057e65e..0c69234 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -1,30 +1,26 @@
-#include <stdio.h>
-#include<ctype.h>
-#include<math.h>
-int main()
-{
-    float x=0;
-    float value =0;
-    int count =0;
-    float arr[50];
-    while(scanf("%f",&value)!=EOF){
-        if(isalpha(value)!=0){
-            return 0;
-        }
-        if(count !=0){
-            arr[count-1]=value;
-        }
-        else{
-            x=value;
-        }
-        count++;
-    }
-    value=0;
-    for(int i =0;i<count;i++){
-        value+=arr[count]*pow(x,count-i);
-    }
-    printf("Vysledok je :%f\n",value);
-    
-
-    return 0;
-}
\ No newline at end of file
+#define _XOPEN_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+int main()
+{
+    printf("Enter date: ");
+    
+    char dateStr[11];
+    struct tm t;
+    
+    fgets(dateStr, 11, stdin);
+    
+    strptime(dateStr, "%d.%m.%Y", &t);
+    
+    t.tm_mday += 7;
+    
+    strftime(dateStr, sizeof(dateStr), "%d.%m.%Y", &t);
+    
+    printf("The day of the week is %s", dateStr);
+    exit(EXIT_SUCCESS);
+
+    return 0;
+}