Update ex11_3_4.cpp
Update ex10_1_2.cpp

 read values into a list of strings.
Merge pull request #82 from shbling/patch-6

Update ex11_3_4.cpp :std::tolower  to  tolowe
Merge pull request #84 from shbling/patch-7

Update ex10_1_2.cpp
Update ex10_6_9_10.cpp
Merge pull request #85 from shbling/patch-8

Update ex10_6_9_10.cpp