deque::size

deque::size

 

Returns the number of elements in the deque.


size_type size( ) const;

The current length of the deque.

Example

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

int main( ) 
{
   using namespace std;
   deque <int> c1;
   deque <int>::size_type i;

   c1.push_back( 1 );
   i = c1.size( );
   cout << "The deque length is " << i << "." << endl;

   c1.push_back( 2 );
   i = c1.size( );
   cout << "The deque length is now " << i << "." << endl;
}
The deque length is 1.
The deque length is now 2.

Requirements

Header: <deque>

Namespace: std

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