vector::pop_back


public member function
void pop_back ( );

Delete last element

Removes the last element in the vector, effectively reducing the vector size by one and invalidating all iterators and references to it.

This calls the removed element's destructor.

Parameters

none

Return value

none

Example

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// vector::pop_back
#include <iostream>
#include <vector>
using namespace std;

int main ()
{
  vector<int> myvector;
  int sum (0);
  myvector.push_back (100);
  myvector.push_back (200);
  myvector.push_back (300);

  while (!myvector.empty())
  {
    sum+=myvector.back();
    myvector.pop_back();
  }

  cout << "The elements of myvector summed " << sum << endl;

  return 0;
}

In this example, the elements are popped out of the vector after they are added up in the sum. Output:
The elements of myvector summed 600


Complexity

Constant.

See also

vector::push_back Add element at the end (public member function)
vector::erase Erase elements (public member function)