#tc1017

We. Are. Done. Finally, our program works like a charm, after several days of research and hardwork, our project is capable of resizing an image and changing the color to black and white. 

We kinda did it in two parts, the first one being the black and white, that you can check out here.

For the “second part”, we researched and found out how to resize the source image using math and arrays. These links were reaaaaaally useful:

http://stackoverflow.com/questions/27351737/c-how-to-shrink-an-image-using-a-pointer-array http://stackoverflow.com/questions/299267/image-scaling-and-rotating-in-c-c http://doc.gnu-darwin.org/ImageMagick/www/ImageMagickObject.html http://www.cplusplus.com/forum/general/2615/

Basically, what resizing does is to take 4 RGB pixels (2 width, 2 height) get an average of every color (red, green, and blue) like it did on the B&W part, and add this to a new pixel, creating a new resized image which is half the size of the original.

We worked together with Eduardo and we mutually helped each other. And, of course, we did check out some other codes because we couldn’t simply start. So we appreciate Miguel Ángel’s work, as well as the help provided by Eduardo. 

Now, we had a lot of errors during the process about syntax but the one we dealt with the most was an error called “segmentation fault”. After battling with it, Eduardo and us found out that our program wasn’t the problem, but the source image was. We looked and tried several images until we found one that worked, which was the golden retriever puppy on the English Wikipedia page of “Puppy”. We then found out other images that didn’t throw us the error as well.

We are really happy about the outcome of the project.

Here are some screenshots:

Here’s a brief video of me talking about my experience with the class and some tips and tricks to it.

This WSQ was not as hard as I thought, but it required research and a full understanding of what was inside the text file. I checked these webpages, I think they are useful: http://www.cplusplus.com/doc/tutorial/files/ http://www.cplusplus.com/forum/beginner/8388/

The calculation of square roots with the Babylonian Method is quite interesting and demonstrates the awesomeness of math. You can check out how this method works here. 

For this WSQ, I used this webpage as a guide.

This WSQ was easier than I thought.

On this mastery I will show you some basic variable types in C++, how and when to use them. 

There are several types in C++ but the basic ones are char, int, long, float, and double.

Each one serves a specific purpose when a variable is used.

char type consists of characters used in a function. It is used when your output will consist of a character or characters. For example, we used it on mastery 19 when our output was a character.

int type is the most used and common in C++. We can use it for numbers but not so big ones. We used it on mastery 10 where our output was a simple math operation.

long type is similar to int but allows us to have bigger integer number outputs. We used it on mastery 21 where our factorial numbers could get bigger.

float and double allows us to have non integer number outputs. For example, the division of 3/2 = 1.5, float allows us to have that output and double works as long, where we can have bigger non-integer number outputs. float was used on wsq10 where a divition could be a non-integer number.