ImageViewer can One-Finger-Zoom.

I made this android app to zoom-in/out by one finger.
Using pinch-zoom, we have to use two hands and two fingers.
It always makes me feel dissatisfaction.

Red-Stone made by OpenGL.

Red-Stone is the program i made when i was an university student.
It's about 8 years ago.
It is just red-colored stone rotating around and transforms to a butterfly, a hand and the miky-mouse.

Implementation of the Mutual Exclusion Algorithm

I implement the mutual exclusion algorithm. of the distributed operating system.
There are four files. (server.pdf, client.pdf, error.pdf, sclist.pdf)
Rewrite the source code in the pdf file to .c source file and compile the soruce codes. Then it work correctly.

How to assemble the spacewarp.