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;
}
Output
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