Stack inbuilt function in stl

#1

What is emplace() function and why it is not working in dev c++ IDE .plz reply

#2

@guptagchandan123123, Stack emplace ,Adds a new element at the top of the stack , above its current top element . This new element is constructed in place passing args as the arguments for its constructor.

#include <iostream>       // std::cin, std::cout
#include <stack>          // std::stack
#include <string>         // std::string, std::getline(string)

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

  mystack.emplace ("First sentence");
  mystack.emplace ("Second sentence");

  std::cout << "mystack contains:\n";
  while (!mystack.empty())
  {
    std::cout << mystack.top() << '\n';
    mystack.pop();
  }

  return 0;
}

Output :-
mystack contains:
Second sentence
First sentence

This function is only supported by c++ version 11 or higher so check your compiler version and set it to higher compiler version

#3

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