堆栈

#include <stack>
using namespace std;
stack<元素类型[,底层容器类型]> 堆栈对象(构造实参表);
底层容器：vector/deque(默认)/list
push -> push_back
pop -> pop_back
top -> back
size -> size
empty -> empty
clear -> clear

#include <iostream>
#include <stack>
#include <vector>
#include <list>
using namespace std;
int main (void) {
//    stack<string, vector<string> > ss;
//    stack<string, list<string> > ss;
stack<string> ss;
ss.push ("C++!");
ss.push ("喜欢");
ss.push ("我们");
while (! ss.empty ()) {
cout << ss.top () << flush;
ss.pop ();
}
cout << endl;
return 0;
}