Your challenge for this month’s Exercise is to write a sign() function, which returns 1, 0, or -1 depending on the sign of an integer. A relatively simple thing to code — I hope!
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The challenge for this month’s Exercise is to initialize two different arrays to two sets of values. You should try to use only one loop and try to use a single statement to make the element assignments.
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The challenge for this month’s Exercise is to discover those values in the range 1 to 999 that have the highest number of factors. Never mind the math! Let C and the computer do the work for you.
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This month’s Exercise is to create a program that converts weight measurements by using this format:

nnnFT

Where nnn is a value, F is the unit to convert from, and T is the unit to convert to. This problem is more of an input-parsing exercise than a straight conversion.
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The task for this month’s Exercise is to return the month number for a time_t value. Effectively you extract the year and month, do some math, presto. Could it be this easy?
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I find it odd that the recursive solution for this month’s Exercise is far shorter than the non-recursive version. Yet, it has an elegance that’s evident in lots of recursive code examples.
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The task for this month’s Exercise is to write code that outputs strings for number values, 0 through 100. Your goal is to be clever with your solution, something that took me a few versions to get correct.
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The solution this month’s Exercise isn’t that complex, but it was handy in disproving a theory.
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This month’s Exercise wasn’t astronomically difficult, but I did spend some time devising a solution. My goal was to try to avoid writing a nested loop. This goal proved unattainable.
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The challenge for this month’s Exercise is not only to calculate Euler’s number, e, but to count how many loops a program must endure before your e value calculation matches the defined constant M_E. I hope you didn’t find this challenge too difficult.
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