Yes, this Exercise has been done before. But back then, exactly seven years ago, I had the digits reduced further so that the result was a single digit. This time, your goal is to tally the digits in an integer and report the results — no reductions!
Continue reading
The power of an associative array is that it uses keys, text or numbers, to reference values. Know the key and you can fetch the value . This “association” works like an array in C, where you know the index or offset for an element. Though with an associative array, the index is a value or string — the key.
Continue reading
The first phony associative array function I need to write is a simple dump: Output the array’s contents in the form of pairs. Performing this operation requires a bit of manipulation to the way the array is presented in the code.
Continue reading
Being the ancient and venerable programming language it is, C lacks the associative array data type. This type of array is found in other languages, and it can be awkwardly simulated in C.
Continue reading
This month’s Exercise challenges you to swap two variables’ values without using a third variable. It’s a solution widely available on the Internet, but your job is to figure out the technique without looking elsewhere.
Continue reading
I enjoy studying foreign languages. A tool like Google Translate comes in handy, but it’s not perfect. That’s because computers translate words and phrases, but not the living, spoken language. Regardless, I thought I’d give language translation a stab, which got me into the topic of exploring arrays.
Continue reading
The classic paradigm for swapping values between two variables involves using a third variable. But is the third variable even necessary?
Continue reading
Last week’s Lesson explored using the clock_gettime() function to pause program execution for a given number of nanoseconds. The code, however, contains a flaw that may render an inaccurate result.
Continue reading
I’ve written about my own delay() function, which uses processor clock ticks to calculate a time delay in milliseconds. Thanks to the clock_gettime() function, I can write a new time-delay function that operates from nanoseconds — or close to it. I hope.
Continue reading
From last week’s Lesson, the clock_gettime() function returns values in both time_t (Unix Epoch) seconds as well as nanoseconds. This rich variety makes the function quite useful for coding time-critical details where values less than a second are desired.
Continue reading