The missing line would be x+= num
This means that every time a number is selected from the range it is added to the value of x.
The first two parameters of the ellipse function are the beginning x and y coordinates. The last two are the width and height of the ellipse. The second ellipse starts at (200px, 200px) and has a width and height equal to mouthS. We are given mouthS as 30, therefore the mouth is 30 pixels wide.
Disk access is way slower than
memory access. Caching is a technique to improve the disk access time. Block cache is a caching technique which
reduces disk accesses time. Here a
portion of disk is bought to cache for reading and a modified blocks are first
changed in cache but reflected in the disk at one go. On the other hand with write through caching
each modified block is written to cache and at the same time it is written to
the disk. Write- through caching
requires more disk I/O so they can have a negative effect on the performance.
