In a post from 2020, I wrote about various integer size values. Seems they don’t consistently sport the same bit width. Just recently, I’ve obtained some updated information and valuable insight into the bit width question.
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Oh, leave it to the propeller heads to devise a clever and fun name for something the rest of us never pay attention to. This time it’s a cyclops number, which is any decimal integer value with an odd number of digits and a big fat zero in the middle — like a cyclops’ eye.
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Occasionally the Wizards of C concoct a mad method to perform some magical feat on a number. This sorcery cannot be explained using those scant, basic math concepts known to me. So perhaps you’d like to invest a few moments to review what I consider to be one of the most insane ways to discover the maximum power of two that can divide any integer.
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I am not a math genius, as any math genius who reviews my work is happy to tell me. Even so, when programming I’m often faced with math challenges where a math education would benefit. My most recent puzzle is how to count the number of digits in a value without first converting the value into a string.
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I saw this problem on stackoverflow: How can you take a month string and convert it into an integer value, one through 12? The student submitting the query used a long if-else if-else construction. I have a better idea.
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I don’t believe one definitive solution exists for this month’s Exercise: Output a string of upper- and lowercase letters. No, the challenge is more to discover different insights a coder has to a specific problem.
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I have two questions when it comes to using the % operator: Is it modulus or modulo? And which value comes first?
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Here’s an easy exercise to try, something for those first learning C programming but also a challenge for experienced users: Output the alphabet A to Z in both upper and lowercase letters. It’s an “easy” exercise only when you don’t explore the possibilities.
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Programs often ask questions: yes-or-no and multiple choice. The user must select one of the given options, which I refer to as forcing a decision. Your goal as programmer is to pester the user to input a valid choice.
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It’s possible to return a string created in a function without declaring it static. This trick requires some understanding of how functions return values. Nerd alert!
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