getopt.h replacement

[robcat2075]

The CS50 download code for "Filter" uses a library for "getopt()" which seems to exist in their linux environment but not in windows.

At first blush, this windows replacement seems to work.

https://github.com/kubo/ya_getopt

[robcat2075]

Some results from recent C++ exercise regarding file data manipulation.

Using this image as input:

 

Here "edge detection" has been done. Every pixel in the original was tested  to see if its red, green, or blue values were different from its neighboring pixels beyond a certain threshold. If so, a white pixel was plotted in the new image. If not, a black pixel is plotted.

 

Here the image has been rotated. Every pixel in the output image is populated by the values of a pixel that is x degrees from it, around a center point. If that x degree rotation is looking at a position that is off the original frame, a black pixel is plotted.