c++ stl stack_C ++ STL中的stack :: empty（）函数-蒲公英云

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

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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