how to use data type, constant and variable in c++

Dear Lecturer
Name: Him Seanghon
Mayor: D4 TMD Batch 6

This is my homework for Module 2 about Data type, Constant and variable in C++ programming

Video for Data Type in youtube:

This is my link on youtube: http://youtu.be/ZxNrfKh3wV4


Video for Constant variable in youtube:

 This is my link on youtube : http://youtu.be/ToQwWH2Ve3g


Video for Variable in youtube:

This is my link on youtube : http://youtu.be/6PJFzyVHNws

Thanks!