Check out example codes for "get last element of stack c++". It will help you in understanding the concepts better.

Code Example 1

// stack::top
#include <iostream>       // std::cout
#include <stack>          // std::stack

int main ()
{
  std::stack<int> mystack;

  mystack.push(10);
  mystack.push(20);
  // .top() gets the last/top element of stack c++
  mystack.top() -= 5;

  std::cout << "mystack.top() is now " << mystack.top() << '\n';

  return 0;
}

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