diff --git a/src/db.c b/src/db.c
index bc701ce..7240bb8 100644
--- a/src/db.c
+++ b/src/db.c
@@ -1,4 +1,5 @@
-/*
+/* Create a database and handel it
+ * Created by Jan on 13.12.2024.
  * INPUT: query for previous state
  *        linked list of tasks to store
  *
@@ -9,12 +10,33 @@
  *
  */
 
-/************************************************************
-*Create a database and handel it
-*Created by Jan on 13.12.2024.
-*
-************************************************************/
+
 #include <stdio.h>
+#include <stdlib.h>
 #include <time.h>
 #include "planner.h"
+#include "list.h"
 
+/*
+write a complete linkedlist to a csv file.
+ */
+void write_linkedlist_to_csv(llist* head, const char* filename) {
+  //Open file with write permision
+  FILE* file = fopen(filename, "w");
+  //if there is no file or a wrong file path you becom an error
+  if (file == NULL) {
+    printf("Could not open file %s\n", filename);
+  }
+  else{
+    //write the file head
+    //fprintf(file, "**********************");
+
+    // iteration through the list and write data to csv
+    llist* current = head;
+    while (current != NULL) {
+         //fprintf(file, "%d \n", current->id );
+          current = current->next;
+    }
+    fclose(file)
+  }
+}
\ No newline at end of file