2015年8月19日 (三) 06:36 Admin

2015-08-19T06:36:02Z

Admin：以“These can be used inside the condition of an if statement.”为内容创建页面

2015-08-19T06:21:40Z

以“These can be used inside the condition of an if statement.”为内容创建页面

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These can be used inside the condition of an [[If(条件判断语句) 和比较运算符 | if]] statement.

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	These can be used inside the condition of an [[If(条件判断语句) 和比较运算符 \| if]] statement.		These can be used inside the condition of an [[If(条件判断语句) 和比较运算符 \| if]] statement.
		+
		+	这些可以使用于[[If(条件判断语句) 和比较运算符 \| if]] 语句中的条件判断。
		+
		+
		+
		+	<font color="orange" size="+1">'''&& (逻辑与)'''</font>
		+
		+
		+	True only if both operands are true, e.g.
		+
		+	<pre style="color:dimgray">
		+	if (digitalRead(2) == HIGH && digitalRead(3) == HIGH) { // read two switches
		+	// ...
		+	}
		+	</pre>
		+
		+	is true only if both inputs are high.
		+
		+
		+
		+	<font color="orange" size="+1">'''\|\| (逻辑或)'''</font>
		+
		+
		+	True if either operand is true, e.g.
		+
		+	<pre style="color:dimgray">
		+	if (x > 0 \|\| y > 0) {
		+	// ...
		+	}
		+	</pre>
		+	is true if either x or y is greater than 0.
		+
		+
		+
		+	<font color="orange" size="+1">'''! (取反)'''</font>
		+
		+
		+	True if the operand is false, e.g.
		+
		+	<pre style="color:dimgray">
		+	if (!x) {
		+	// ...
		+	}
		+	</pre>
		+
		+	is true if x is false (i.e. if x equals 0).
		+
		+
		+	<font color="darkorenge">'''警告：'''</font><br/>
		+
		+
		+	Make sure you don't mistake the boolean AND operator, && (double ampersand) for the bitwise AND operator & (single ampersand). They are entirely different beasts.
		+
		+
		+	Similarly, do not confuse the boolean \|\| (double pipe) operator with the bitwise OR operator \| (single pipe).
		+
		+
		+	The bitwise not ~ (tilde) looks much different than the boolean not ! (exclamation point or "bang" as the programmers say) but you still have to be sure which one you want where.
		+
		+
		+
		+	<font color="orange" size="+1">'''示例'''</font>
		+
		+	<pre style="color:dimgray">
		+	if (a >= 10 && a <= 20){} // true if a is between 10 and 20
		+	</pre>
		+
		+
		+	----
		+
		+
		+	[[Arduino语法参考 \| 返回Arduino语法参考列表]]
		+
		+	更多建议和问题欢迎反馈至 [http://www.yfrobot.com YFRobot论坛]

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2015年8月19日 (三) 06:36 Admin

Admin：以“These can be used inside the condition of an if statement.”为内容创建页面