The challenge for this month’s Exercise is to code Heron’s Formula. This geometric magic calculates the area of a triangle given the length of each of its three sides.
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The task for this month’s C programming Exercise is to code a filter that reverses single words. As a filter, the code deals with standard input and output, but it must store this input in word-sized chunks for the reversing process to work.
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My solution for this month’s Exercise didn’t require much work. What I did was to “stack overflow” the problem by pulling in functions from earlier Lessons. The only new portion of code deals with processing the input before sending the string off to the b36_decimal() function I’ve already written.
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This month’s Exercise presents more than a traditional filter. Instead of input being processed and immediately output, the input must be stored. Further, the storage quantity is unknown. Therefore, to provide proper storage the code must employ an expanding buffer. This condition means that the solution relies upon the scariest aspect of C programming: pointers!
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Your task for this month’s Exercise is to write a program that outputs a value in any base, between 2 and 10. Sure, you can use this code to communicate with alien species that use a base other than decimal, but this benefit is only a happy coincidence to the exercise.
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The challenge for this month’s Exercise is to output a series of numbers, 1 through 10, and to ensure that the final number doesn’t look dorky. I’m certain that’s what I asked for.
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The task for this month’s Exercise is to repeatedly call the strstr() function, locating all instances of one string (“needle”) inside another (“haystack”). Obviously your first task, which also helps with the solution, is to perform error checking on the return value from the strstr() function.
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The solution for this month’s Exercise is to output the string "I am an excellent C programmer". This task isn’t so simple when you must untie the knot of the dratted double pointer.
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In an alternative universe, the C programming language lacks a modulus operator and no companion function exists in the library. What to do! Why, you code your own modulus function, which is the challenge for this month’s Exercise.
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This month’s Exercise is to write code to calculate a double factorial, which uses the !! notation. A double factorial works like a factorial, but uses only odd or even values based on the parity of the starting value.
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