Calculate volume of pyramid or volume of square using while with swith

This is a video show you a program to calculate the volume of pyramid or volume of square. This video, you can choose only one to calculate. If you you choose number 1, the program will calculate the volume of pyramid. If you choose number 2, it will calculate the volume of square. After it calculate the volume of pyramid or square already, it will end the program. However, if you input number which is difference from 1 and 2, it will allow you to input again for your choice.

Visit this video in youtube.com
http://www.youtube.com/watch?v=lsJ9wDomkKE&feature=youtu.be