提取stack元素时，C++，如何解决void value not ignored as it ought to be

Question

各位大佬，有谁可以解答一下为什么这里会报错吗？

void value not ignored as it ought to be

#include<iostream>
#include<stack>
using namespace std;

int main()
{   
    stack <int> tempt;
    tempt.push(1);
    tempt.push(1);
    //报错位置
    int a=tempt.pop();
    cout<<a;
    return 0;
}

Answer 1

std::stack::pop //是没有返回值的；你把它赋给int 肯定报错