From 8614d6b1f445b1725eb23eeb3e6ae2c62fcc63fb Mon Sep 17 00:00:00 2001
From: leiyu3 <s444814187@gmail.com>
Date: Tue, 20 Sep 2022 16:17:17 -0400
Subject: implement pop

---
 main.c | 30 ++++++++++++++----------------
 1 file changed, 14 insertions(+), 16 deletions(-)

diff --git a/main.c b/main.c
index ab3fbb3..63fe862 100644
--- a/main.c
+++ b/main.c
@@ -78,7 +78,13 @@ void insert(vector_t *vec, int index, int val){
 
 void prepend(vector_t *vec, int value){
     insert(vec, 0, value);
+}
 
+int pop(vector_t *vec){
+    // remove item at the end, return value
+    int ret = vec->arr[vec->cur_size-1];
+    vec->cur_size--;
+    return ret;
 }
 
 void print_vec(vector_t vec){
@@ -101,25 +107,17 @@ int main(void){
     printf("The capacity of the vector is %d.\n", capacity(vec));
     printf("is_empty returns: %d.\n", is_empty(vec));
 
-    push(&vec, 1);
-    push(&vec, 2);
-    push(&vec, 3);
-    push(&vec, 4);
-    push(&vec, 5);
-    push(&vec, 6);
-    push(&vec, 7);
-    push(&vec, 8);
-    push(&vec, 9);
-    push(&vec, 10);
-    push(&vec, 11);
-    push(&vec, 12);
-    push(&vec, 13);
-    push(&vec, 14);
-    push(&vec, 15);
-    prepend(&vec, 0);
 
     printf("-----\n");
 
+    for (int i = 0; i < vec.max_size; i++){
+        push(&vec, i);
+    }
+
+    for (int i = 0; i < vec.max_size; i++){
+        printf("pop: %d\n", pop(&vec));
+    }
+
     printf("The size of the vector is %d.\n", size(vec));
     printf("The first element of the vector is %d.\n", at(vec, 0));
     printf("is_empty returns: %d.\n", is_empty(vec));
-- 
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