add list

.gitignore

@@ -18,3 +18,4 @@
 
 game
 *.ttf
+*.out

list.c

@@ -0,0 +1,38 @@
+#include "list.h"
+#include <string.h>
+#include <stdlib.h>
+
+void push(struct node **head, void *data, size_t data_size) {
+    struct node* new_node = malloc(sizeof(struct node));
+    new_node->data = malloc(data_size);
+    new_node->next = *head;
+    memcpy(new_node->data, data, data_size);
+    *head = new_node;
+}
+
+void erase(struct node **head, int n) {
+    int i;
+    struct node *tmp = *head;
+    if (n == 0) {
+        tmp = (*head)->next;
+        free((*head)->data);
+        free(*head);
+        *head = tmp;
+    } else {
+        for (i = 0; i < n - 1; i++) {
+            if (tmp->next != NULL) {
+                tmp = tmp->next;
+            } else {
+                break;
+            }
+        }
+        struct node *next = NULL; 
+        if (tmp->next != NULL) {
+            next = tmp->next->next;
+        }
+        free(tmp->next->data);
+        free(tmp->next);
+        tmp->next = next;
+    }
+}
+

list.h

@@ -0,0 +1,14 @@
+#ifndef LIST_H
+#define LIST_H
+#include <stdio.h>
+
+
+struct node {
+    void *data;
+    struct node *next;
+};
+
+void push(struct node **head, void *new_data, size_t data_size);
+void erase(struct node **head, int n);
+
+#endif