The printf() function’s conversion characters %s and %c seem to be rather straightforward. Or are they?
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Conversion Character Mania: Text Output
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Author Archives: dgookin
Allow Me to Squeeze In Here…
When it comes to editing text, the concept of copy and paste is an old one: You select a chunk of text, choose its new location, then paste in the text. The surrounding text jiggles around to make room. Neat and tidy.
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Conversion Character Mania: Floating Point Output
Perhaps the most complex and bizarre things you can format with printf() conversion characters are floating point numbers. The variety of the options can be overwhelming.
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Conversion Character Mania: Integer Output
The printf() function’s power lies in its formatting abilities, specifically the display of values. That power is vast, but the documentation showing how it works really sucks.
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Conversion Character Abuse
The printf() function is most concerned with getting the number of conversion characters — the % placeholders — to match the number of variables specified. Beyond that, it’s rather ambivalent as to whether the types match properly.
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The C Variable Myth
A variable in C is a myth. Oh, yeah, it’s a location in memory. That’s pretty much it. After declaring the variable, the compiler — and you, the programmer — pretty much rely upon faith that the variable works and can actually be useful.
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Min and Max
The C language is rather weak when it comes to array functions. In fact, as far as I know, the standard library doesn’t contain a single array function.
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The Month Array
Why present the current date as 8/31/2013 when you can express it as August 31, 2013? Because some things are easy to program and some are easy for the program’s user to read.
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Why Not Float All the Time?
What’s the point of using integers when you could simply code programs using floating-point values all the time to always get the best results? The reason is a good one, but it takes some explaining.
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Unique Random Numbers
The goal is to write code that generates random numbers, but never the same value twice. After all, if you’re coding a card game or generating lotto picks, it’s unrealistic to expect the same value appear multiple times.
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