Update stack.cpp

array.cpp修改了格式问题

codes/cpp/chapter_stack_and_queue/stack.cpp

@@ -1,8 +1,38 @@
 /*
  * File: stack.cpp
- * Created Time: 2022-11-25
- * Author: Krahets (krahets@163.com)
+ * Created Time: 2022-11-28
+ * Author: qualifier1024 (2539244001@qq.com)
  */
 
 #include "../include/include.hpp"
 
+int main(){
+    /* 初始化栈 */
+    stack<int> stack;
+
+    /* 元素入栈 */
+    stack.push(1);
+    stack.push(3);
+    stack.push(2);
+    stack.push(5);
+    stack.push(4);
+    cout << "栈 stack = ";
+    PrintUtil::printStack(stack);
+
+    /* 访问栈顶元素 */
+    int top = stack.top();
+    cout << "栈顶元素 top = " << top << endl;
+
+    /* 元素出栈 */
+    stack.pop();
+    cout<< "出栈元素 pop = " << top << "，出栈后 stack = ";
+    PrintUtil::printStack(stack);
+
+    /* 获取栈的长度 */
+    int size = stack.size();
+    cout<< "栈的长度 size = " << size << endl;
+
+    /* 判断是否为空 */
+    bool empty = stack.empty();
+    return 0;
+}