reference top(); | ||
const_reference top() const; |
Returns reference to the top element in the stack. This is the most recently pushed element. This element will be removed on a call to pop(). Effectively calls c.back().
Parameters
(none).
Return value
Reference to the last element.
Complexity
Constant.
Example
#include <stack>
#include <iostream>
int main()
{
std::stack<int> s;
s.push( 2 );
s.push( 6 );
s.push( 51 );
std::cout << s.size() << " elements on stack\n";
std::cout << "Top element: "
<< s.top() // Leaves element on stack
<< "\n";
std::cout << s.size() << " elements on stack\n";
s.pop();
std::cout << s.size() << " elements on stack\n";
std::cout << "Top element: " << s.top() << "\n";
return 0;
}Output:
3 elements on stack Top element: 51 3 elements on stack 2 elements on stack Top element: 6
See also
| inserts element at the top (public member function) | |
| removes the top element (public member function) |
Please login to continue.