Boolean Assignment Operators

^:異或

Conditional Boolean Operators(&& and ||)
If the value of the first operand of the && operator is false, then there is no need to consider the value of the second operand, because the result will be false regardless. Similarly, the || operator returns true if its first operand is true, regardless of the value of the second operand.

Operator Precedence

The Ternary Operator
<test> ? <resultIfTrue> : <resultIfFalse>

The Switch Statement
It is illegal for the flow of execution to reach a second case statement after processing one case block.

switch (<testVar>)
{
	case <comparisonVal1>:
		<code to execute if <testVar> == <comparisonVal1> >
		// 在執行一個case語句塊之後不能再執行下一個case語句塊，所以這裡必須加一個break;
		break;
	case <comparisonVal2>:
		<code to execute if <testVar> == <comparisonVal2> >
		break;
}

switch (<testVar>)
{
	case <comparisonVal1>:
		<code to execute if <testVar> == <comparisonVal1> >
		// 實現在執行一個case語句塊後，執行下一個語句塊
		goto case <comparisonVal2>;
	case <comparisonVal2>:
		<code to execute if <testVar> == <comparisonVal2> >
		break;
}

switch (<testVar>)
{
	case <comparisonVal1>:
	case <comparisonVal2>:
		// 對不同的判定結果執行相同的case語句塊
		<code to execute if <testVar> == <comparisonVal1> or <testVar> == <comparisonVal2> >
		break;
}