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The Leap Year Function – Solution

Posted on June 8, 2018 by dgookin
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I’ve tackled the leap year program on this blog before. My Month Program series addressed the issue specifically. That code offers the february() function, which returns 28 or 29, depending on whether the current year is the leap year.
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Translating a Timestamp – Solution

Posted on May 8, 2018 by dgookin
3

Your task for this month’s Exercise is to take a timestamp string and move values from inside a string (characters) into a structure. It’s not an easy exercise, and it doesn’t have a single, best solution.
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Highlight a Chunk of Text – Solution

Posted on April 8, 2018 by dgookin
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Your task for this month’s Exercise is to code a text-processing routine that interprets the ^ character as a toggle for all-caps output. This challenge can be difficult, depending on how you interpret the toggle.
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Increasing Brightness – Solution

Posted on March 8, 2018 by dgookin
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The challenge for this month’s Exercise is to fill a cup without overflowing it. That cup is an unsigned char value, which goes only to 255 maximum. If your goal is increase the value of an unsigned char variable by 10 percent, any value over 255 - (255/10), or 220, must be set to 255.
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Oscillation – Solution

Posted on February 8, 2018 by dgookin
5

For my solution to this month’s Oscillation Exercise I created a toggle variable. This variable switches between 1 and -1. It sets the direction for the cascading values.
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Swapping Strings – Solution

Posted on January 8, 2018 by dgookin
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This month’s Exercise involves swapping elements between two string arrays. A number of solutions exist (as always), but because the “strings” are really pointers, the solution can be very specific. Yes, you just might have to use that dratted ** notation. Brace yourselves.
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Swapping Arrays – Solution

Posted on December 8, 2017 by dgookin
2

The two functions required from this month’s Exercise are show_arrays() and swap_arrays(). They’re not that difficult to code, meaning that you don’t need to use the dratted ** notation or perform any special tricks. Here’s how I solved the problem:
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Filename Extractor – Solution

Posted on November 8, 2017 by dgookin
4

When I see a problem such as finding a filename in a pathname, one of the first things I think of are regular expressions. For this month’s Exercise, however, that’s not the solution I coded.
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Right String – Solution

Posted on October 8, 2017 by dgookin
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For this month’s Exercise, I offer both a string function solution as well as a solution that uses pointers. As you can guess, I thought of the string method first, which is where most programmers would run to avoid the dratted topic of pointers.
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The URL Decoding Filter – Solution

Posted on September 8, 2017 by dgookin
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Unwinding percent-encoding involves three steps:

  1. Pass-through the unchanged characters.
  2. Change + back into a space.
  3. Decode the percent strings, which is the most involved process.

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