Today marks the 13th anniversary of this blog’s first post. The blog didn’t go live for a few months, specifically to ensure that I would A) keep up the posts (a fault with many blogs) and B) have plenty of material for visitors to peruse. It’s been going strong and consistently since that original post, April 13th, 2013.
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Continuing from last week’s Lesson, my goal for the grid is to split it into chunks which are then reduced based on the average value of each chunk. To best visualize this, I’d like to keep the byte patterns in the grid consistent and — as a bonus — color-code them.
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I recently embarked upon a programming project where I must reduce large chunks of data into more manageable pieces. The general topic is computer graphics, so a bit of data loss when reducing an image is expected. But before working with the graphical data itself, I decided to run a test on a random chunk of data to confirm whether I was on the right track.
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I was surprised to discover that I hadn’t written about this topic before: converting a decimal value into a fraction. Of course, the solution is really stupid — which I’ll show in a moment. But the goal is to reduce or simplify the stupid way and end up with a fraction instead of a decimal.
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The next time March 14 drops on a Saturday will be in 2037. Yes, I will be long retired by then. Or perhaps the C language will finally be retired. Who knows? Regardless, here’s another program that uses some obscure mathematical mumbo-jumbo to calculate the value of π.
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It’s been a few years since I’ve had π day here on the C blog. Because I schedule posts for Saturdays, only thrice has a post fallen on π day: In 2015, 2020, and now in 2026.
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I promise that this is the final post dealing with reading a mouse in a terminal window. It’s a weird thing to do without a specific library in C, but made possible thanks to ANSI codes and the standard I/O programming necessary to read and store the data.
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The point of reading and capturing mouse data is to do something at the mouse’s location. Specifically, the goal is to have the terminal somehow react to a mouse click. Yes, even though C is stream oriented and rarely involves graphics or the mouse, this feat is made possible thanks to ANSI commands.
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Spewing data all over the screen might look impressive, as shown in last week’s Lesson, but the point of knowing where the mouse is and what it’s doing is to capture its data and make it available to your program for interpretation.
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Monitoring the mouse in a terminal window happens thanks to various ANSI commands. Last week’s Lesson demonstrated how mouse clicks are detected. By issuing another ANSI command, the mouse’s location data is obtained, but doing so carelessly can create a horrid mess.
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