c++ stl stack_C ++ STL中的stack :: empty（）函数

骑猪看日落 2023-03-05 12:50 55阅读 0赞

c++ stl stack

**Prototype:**

**原型：**

stack<T> st; //declaration
        st.empty();

**Parameter:**

**参数：**

No parameter passed

**Return type:** Bool (True or False)

**返回类型：**布尔型(True或False)

*  True: Stack is empty
    
    正确：堆栈为空
 *  False: Stack is not empty
    
    False：堆栈不为空

**Header file to be included:**

**包含的头文件：**

#include <iostream>
        #include <stack>
        OR
        #include <bits/stdc++.h>

**Usage:**

**用法：**

The function checks whether a stack is empty or not.

该函数检查堆栈是否为空。

**Time complexity: O(1)**

**时间复杂度：O(1)**

**Example:**

**例：**

For a stack of integer,
        stack<int> st;
        st.push(4);
        st.push(5);
        stack content:
        5 
     C++ implementation:
     Output
     ...use of empty function...
    stack elements are:
    top element is:6
    top element is:5
    top element is:4
    stack empty
    3 pop operation performed total to make stack empty
    
    
    
    
    
    
    
       
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> 翻译自: [https://www.includehelp.com/stl/stack-empty-function-in-cpp-stl.aspx][https_www.includehelp.com_stl_stack-empty-function-in-cpp-stl.aspx]

c++ stl stack

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