adding iterator.cpp code

lectures/10_linked_lists/iterator.cpp

@@ -0,0 +1,24 @@
+#include <list>
+#include <iostream>
+#include <cassert>
+
+int main(){
+
+	std::list<int> lst;
+	lst.push_back(150);
+	lst.push_back(250);
+	lst.push_back(350);
+	lst.push_back(450);
+	
+	std::list<int>::iterator itr;
+	itr = lst.begin();
+	++itr;
+	*itr += 5;
+
+	std::list<int>::iterator itr2 = lst.begin();
+	while(itr2 != lst.end()){
+		std::cout << *itr2 << std::endl;
+		itr2++;
+	}
+	
+}