The most difficult thing about this month’s Exercise is to deal with stream input: When the user overstuffs the input buffer, those extra characters continue to flow into the program, interpreted as additional input and they make the output look ugly.
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It’s fun supplying your own scores for a semester, which really helps boost your GPA! Still, the challenge for this Month’s Exercise was to input — and validate — a series of grades to calculate your GPA for five courses.
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One way to discover next Tuesday’s date is just to wait. You could code that solution in C, which would be silly, but I hope that you instead chose to use some time functions to derive your answer.
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The challenge for this month’s Exercise is to fill a grid with random letters, a to z, then rotate that grid on its side, counterclockwise, and display the results. Such fun.
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This month’s Exercise is to emulate the antique atoi() function, which converts a string of digits into an integer value.
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The key to making this month’s Exercise work isn’t to know when a word stops, but when the separator characters stop. That’s because words aren’t always separated by single characters.
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The solution to this month’s Exercise involves two things. First, knowing how to shift bits and second how to carefully enclose operators in parentheses to get the macros to behave.
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Interesting numbers have a mathematical property that makes them handy in a certain way. For programming, these numbers present useful binary patterns that may be obvious in hexadecimal but meaningless in decimal. For non-programmers and non-mathematicians, interesting numbers offer visual patterns that most likely have no useful application beyond their look.
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I devised two solutions for this month’s Exercise. The basic solution can be solved in two steps, with a more involved solution using three.
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This month’s Exercise was inspired by a program I recall from years ago called The Drunk and the Lamppost. It’s not the classic joke, but an examination of random movements and probability.
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