The Great Coding Wars host many battles. For example, VIM versus Emacs (add in Nano for extra military action). Also the fight between spaces and tabs for indenting. Add to these conflicts a minor skirmish: whether to use camelCase or snake_case naming conventions.
Continue reading
I refer to the process of converting special characters into strings as tokenizing. The token is a character or string — a code. This code is translated into something else, which allows the program to deal with complex items in a simple manner.
Continue reading
Unless the code must run endlessly, such as a program that operates a gas pump, an endless loop isn’t something you want. From last week’s Lesson, I crafted an endless loop to accept single-word input from the scanf() function to build a string. But no string is output because the loop never ends! It’s time to address this situation.
Continue reading
Trying to salve my frustration with the scanf() function, I decided in last week’s Lesson to try to use scanf() to build a string. Because the function terminates standard input at the first whitespace character (space, tab, newline), the strings input must be stored and the string built in memory.
Continue reading
The challenge for this month’s Exercise is to tally the digits in an integer, reporting the sum. You must use math and not cheat by looking at the old solution, which I didn’t. Promise.
Continue reading
The scanf() function is useful for teaching, but it’s a booger. I avoid it outside of demonstration purposes. But it does provide good fodder for training beginning programmers to think about stream I/O.
Continue reading
Seven years ago (to this same date!) I wrote an Exercise to tally the digits in a number. The solution required that the sum be reduced to a single digit. For example, the sum of digits in 12345 is 15, which is then reduced to six.
Continue reading
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