deque::pop_front

Deletes the element at the beginning of the deque.

void pop_front( );

Remarks

The first element must not be empty. pop_front never throws an exception.

Example

// deque_pop_front.cpp
// compile with: /EHsc
#include <deque>
#include <iostream>

int main( ) 
{
   using namespace std;
   deque <int> c1;
   
   c1.push_back( 1 );
   c1.push_back( 2 );
   cout << "The first element is: " << c1.front( ) << endl;
   cout << "The second element is: " << c1.back( ) << endl;

   c1.pop_front( );
   cout << "After deleting the element at the beginning of the "
      "deque, the first element is: " << c1.front( ) << endl;
}

The first element is: 1
The second element is: 2
After deleting the element at the beginning of the deque, the first element is: 2

Requirements

Header: <deque>

Namespace: std

See Also

Reference

deque Class

deque::push_front and deque::pop_front

Standard Template Library