refactor dynamic array: update C standard, improve memory management, and add size/capacity functions

src/dynamic_array.c

@@ -7,7 +7,7 @@
 
 Array *array_create(const ArrayCreateOptions *options) {
     const ArrayCreateOptions opt = options != NULL ? *options : DEFAULT_ARRAY_CREATE_OPTIONS;
-    const auto array = (Array*) malloc(sizeof(Array));
+    Array *array = (Array*) malloc(sizeof(Array));
 
     array->capacity = opt.initial_size;
     array->value = (int*) calloc(array->capacity, sizeof(int));
@@ -20,7 +20,7 @@ void array_deconstructor(Array **pp_array) {
 
     free((*pp_array)->value);
     free(*pp_array);
-    *pp_array = nullptr;
+    *pp_array = NULL;
 }
 
 void array_resize(Array *p_array, const int new_size) {
@@ -39,15 +39,29 @@ void array_resize(Array *p_array, const int new_size) {
 
 int *array_get_value(const Array *array, const int index) {
     if (index > array->capacity) {
-        return nullptr;
+        return NULL;
     }
     return &array->value[index];
 }
 
 void array_set_value(Array *p_array, const int index, const int value) {
     if (index > p_array->capacity) {
-        const int new_size = (index - p_array->capacity) * 2 + p_array->capacity;
+        int new_size = p_array->capacity;
+        while (index >= new_size) {
+            new_size *= 2;
+        }
         array_resize(p_array, new_size);
     }
+    if (index >= p_array->size) {
+        p_array->size = index + 1;
+    }
     p_array->value[index] = value;
 }
+
+int array_get_size(const Array *p_array) {
+    return p_array->size;
+}
+
+int array_get_capacity(const Array *p_array) {
+    return p_array->capacity;
+}