cppreference.com > C++ Vectors > push_back push_back Syntax:
      #include <vector>
      void push_back( const TYPE& val );
The push_back() function appends val to the end of the vector. For example, the following code puts 10 integers into a list:
       list<int> the_list;
       for( int i = 0; i < 10; i++ )
         the_list.push_back( i );
When displayed, the resulting list would look like this:
     0 1 2 3 4 5 6 7 8 9
push_back() runs in constant time. Related topics: assign insert pop_back (C++ Lists) push_front