Add doxygen comments

2 files changed, 2 insertions, 2 deletions

diff --git a/src/01/01a/priority_queue.c b/src/01/01a/priority_queue.c
index 4d7fc21..d3acbf6 100644
--- a/src/01/01a/priority_queue.c
+++ b/src/01/01a/priority_queue.c
@@ -5,7 +5,7 @@
 /**
  * The equivalent of a constructor to create a PriorityQueue.
  */
-PriorityQueue *initialize() {
+PriorityQueue *initialize(void) {
   PriorityQueue *self = malloc(sizeof(PriorityQueue));
   self->size = 0;
   self->head = NULL;
diff --git a/src/01/01a/priority_queue.h b/src/01/01a/priority_queue.h
index e5390f7..75ad16a 100644
--- a/src/01/01a/priority_queue.h
+++ b/src/01/01a/priority_queue.h
@@ -17,7 +17,7 @@ typedef struct {
   int size;
 } PriorityQueue;
 
-PriorityQueue *initialize();
+PriorityQueue *initialize(void);
 int size(PriorityQueue *queue);
 void add(PriorityQueue *queue, int priority, int data);
 int delete_min(PriorityQueue *queue);