stack function in cpp
// CPP program to demonstrate working of STL stack
#include <bits/stdc++.h>
using namespace std;
void showstack(stack <int> s)
{
while (!s.empty())
{
cout << '\t' << s.top();
s.pop();
}
cout << '\n';
}
int main ()
{
stack <int> s;
s.push(10);
s.push(30);
s.push(20);
s.push(5);
s.push(1);
cout << "The stack is : ";
showstack(s);
cout << "\ns.size() : " << s.size();
cout << "\ns.top() : " << s.top();
cout << "\ns.pop() : ";
s.pop();
showstack(s);
return 0;
}