Added linkedlist and reverse for_each

examples/ex3/main.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include "../../src/macro_collections.h"
+
+CONTAINER_GENERATE(LINKEDLIST, PUBLIC, ll, linked, static, , int)
+
+int main(int argc, char const *argv[])
+{
+    size_t i;
+    int r;
+
+    // Initliazie linked list and add some elements
+    linked *ll = ll_new();
+    for (int i = 0; i < 100; i++)
+        ll_push_back(ll, i);
+
+    // Initialize iterator
+    linked_iter iter;
+    ll_iter(&iter, ll);
+
+    // Move cursor to the end of the list
+    ll_iter_toend(&iter);
+    // While there is a previous element on the list
+    while (ll_iter_prev(&iter, &r, &i))
+        printf("list[%d] = %d\n", i, r);
+
+    // Move cursor to the start of the list
+    ll_iter_tostart(&iter);
+    // While there is a next element on the list
+    while (ll_iter_next(&iter, &r, &i))
+        printf("list[%d] = %d\n", i, r);
+
+    ll_free(ll);
+
+    return 0;
+}