Indentation

Purpose

The whole idea behind indentation is to clearly define where a block of control starts and ends.
Especially when you've been looking at your screen for 20 straight hours, you'll find it a lot easier to see how the indentation works if you have large indentations.

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Tabs

Use tabs to indent your code. Tabs characters will be counted as 1 character by Betty.

The preferred way to ease multiple indentation levels in a switch statement is to align the switch and its subordinate case labels in the same column instead of double-indenting the case labels.
E.g.:

int sample_func(char suffix)
{
	int var;

	var = 0;
	switch (suffix)
	{
	case 'G':
	case 'g':
		var = 30;
		break;
	case 'M':
	case 'm':
		var = 20;
		break;
	case 'K':
	case 'k':
		var = 10;
	default:
		break;
	}
	return (var);
}

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Don't put multiple statements on a single line:

	if (condition) do_this;
	do_something_everytime;

Don't put multiple assignments on a single line either.
Betty coding style is super simple.

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Outside of comments and documentation, spaces are never used for indentation, and the above example is deliberately broken.

Get a decent editor and don't leave whitespace at the end of lines.