The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference, 2nd Edition
by Nicolai M. Josuttis, Addison Wesley Longman, 2012
Copyright © 2012 by Pearson Education, Inc. and Nicolai M. Josuttis
#include "algostuff.hpp"
using namespace std;
int main()
{
list<int> coll;
// insert two sorted sequences
INSERT_ELEMENTS(coll,1,7);
INSERT_ELEMENTS(coll,1,8);
PRINT_ELEMENTS(coll);
// find beginning of second part (element after 7)
list<int>::iterator pos;
pos = find (coll.begin(), coll.end(), // range
7); // value
++pos;
// merge into one sorted range
inplace_merge (coll.begin(), pos, coll.end());
PRINT_ELEMENTS(coll);
}