diff --git a/README.md b/README.md
index 49c79c5..b718a2d 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,23 @@ See the annotated declarations in [/canfigger.h](https://github.com/andy5995/can
 
 ## Examples
 
+```c
+st_canfigger_list *config = canfigger_parse_file("path/to/config.conf", ',');
+while (config != NULL) {
+    printf("Key: %s, Value: %s\n", config->key, config->value);
+
+    // Process attributes if necessary
+    st_canfigger_attr_node *attr = config->attr_node;
+    while (attr) {
+        printf("Attribute: %s\n", attr->str);
+        attr = canfigger_get_next_attr_list_node(attr);
+    }
+
+    // Move to the next node and automatically free the current node
+    config = canfigger_get_next_node(config);
+}
+```
+
 * [tests/test_parse_file.c](https://github.com/andy5995/canfigger/blob/trunk/tests/test_parse_file.c)
 * [tests/test_multiple_attributes.c](https://github.com/andy5995/canfigger/blob/trunk/tests/test_multiple_attributes.c)
 
diff --git a/tests/test_multiple_attributes.c b/tests/test_multiple_attributes.c
index 1500a9a..89402f6 100644
--- a/tests/test_multiple_attributes.c
+++ b/tests/test_multiple_attributes.c
@@ -31,7 +31,7 @@ main(void)
   }
 
   int i = 0;
-  do
+  while (list)
   {
     printf("\n\
 Key: %s\n\
@@ -42,7 +42,7 @@ Attribute: %s\n", list->key, list->value, list->attr_node->str);
     // assert (strcmp (data[i].value, list->value) == 0);
     int j = 0;
 
-    do
+    while (list->attr_node != NULL)
     {
       fprintf(stderr, "attr: %s\n", list->attr_node->str);
       switch (i)
@@ -60,7 +60,7 @@ Attribute: %s\n", list->key, list->value, list->attr_node->str);
       j++;
 
       list->attr_node = canfigger_get_next_attr_list_node(list->attr_node);
-    } while (list->attr_node != NULL);
+    }
 
     fprintf(stderr, "j: %d\n", j);
     if (j > 0)
@@ -82,7 +82,7 @@ Attribute: %s\n", list->key, list->value, list->attr_node->str);
     i++;
 
     list = canfigger_get_next_node(list);
-  } while (list != NULL);
+  }
 
   assert(i == 3);
 
diff --git a/tests/test_parse_file.c b/tests/test_parse_file.c
index fc619e8..eb72161 100644
--- a/tests/test_parse_file.c
+++ b/tests/test_parse_file.c
@@ -33,7 +33,7 @@ main(void)
   }
 
   int i = 0;
-  do
+  while (list)
   {
     fprintf(stderr, "\n\
 Key: %s | Expected: %s\n\
@@ -47,7 +47,7 @@ Attribute: %s | Expected: %s\n", list->key, data[i].key, list->value, data[i].va
     i++;
 
     list = canfigger_get_next_node(list);
-   } while (list != NULL);
+   }
 
   assert(i == ARRAY_SIZE(data));
 
diff --git a/tests/test_parse_file_colons.c b/tests/test_parse_file_colons.c
index bfdffca..912daa1 100644
--- a/tests/test_parse_file_colons.c
+++ b/tests/test_parse_file_colons.c
@@ -25,7 +25,7 @@ main(void)
   }
 
   int i = 0;
-  do
+  while (list != NULL)
   {
     printf("\n\
 Key: %s\n\
@@ -40,7 +40,7 @@ Attribute: %s\n", list->key, list->value, list->attr_node->str);
     i++;
 
     list = canfigger_get_next_node(list);
-  } while (list != NULL);
+  }
 
   assert(i == sizeof data / sizeof data[0]);
 
diff --git a/tests/test_unicode.c b/tests/test_unicode.c
index ed8a4d0..6f518f7 100644
--- a/tests/test_unicode.c
+++ b/tests/test_unicode.c
@@ -31,7 +31,7 @@ main(void)
   }
 
   int i = 0;
-  do
+  while (list)
   {
     printf("\n\
 Key: %s\n\
@@ -45,7 +45,7 @@ Attribute: %s\n", list->key, list->value, list->attr_node->str);
     i++;
 
     list = canfigger_get_next_node(list);
-  } while (list != NULL);
+  }
 
   return 0;
 }