Arduino IF Statement Code Examples by Lewis Loflin Video for this page: Arduino Comparison IF Operators Think of a micro-controller as a box full of basic logic circuits, gates, etc. To control the "box" we have to tell it what hardware to use. We must tell the "box" how to manipulat...
Given below is the structure of anifstatement: If (conditional expression) { Body of the if statement } Theconditional expressioncan be anything that can result either in true or false. If the statement is true, the code in the body of the statement is executed. However, if th...
数组:一个在For循环的变量举例了怎样使用一个数组。 IfStatementConditional:通过for循环来控制多个LED灯 If声明条件:使用一个‘if 声明’,通过改变输入条件来改变输出条件 Switch Case:怎样在非连续的数值里选择。 Switch Case 2:第二个switch-case的例子,展示怎样根据在串口收到的字符来采取不同的行为 While 声明...
if (boolean expression) { statement(s) } else if (boolean expression) { statement(s) } else { statement(s) } 3.3 //(单行注释) Comments(注释) 注释用于提醒自己或他人程序是如何工作的。它们会被编译器忽略掉,也不会传送给处理器,不会执行,所以它们在Atmega芯片上不占用体积。 注释的唯一作用就是使...
statement; 如果你有一个语句,你可以使用没有大括号{}的if语句。 形式2 if (expression) { Block of statements; } 形式3 if … else语句语法 if (expression) { Block of statements; } else { Block of statements; } 2.5 改变程序流程的if条件式 -比较运算符 比较运算符说明 == 如果两者相等则成立,...
E:\示例\servoTest\ESP32_Servo.cpp:236:21: warning: statement has no effect [-Wunused-value] E:\示例\servoTest\ESP32_Servo.cpp:246:9: error: 'ledcDetachPin' was not declared in this scope; did you mean 'ledcDetach'? E:\示例\servoTest\ESP32_Servo.cpp:247:9: error: 'ledcSetup' was...
(s) } while (boolean expression); for (initialisation; termination condition; incrementing expr) { statement(s)} //条件语句 if (boolean expression){ statement(s) } else if (boolean expression) { statement(s) } else { statement(s) } 注释注释是程序中的一些行,用于让自己或他人认识程序的...
if(booleanexpression) { statement(s) } elseif(booleanexpression) { statement(s) } else { statement(s) } 3.3 //(单行注释) Comments(注释) 注释用于提醒自己或他人程序是如何工作的。它们会被编译器忽略掉,也不会传送给处 理器,所以它们在 Atmega 芯片上不占用体积。注释的唯一作用就是使你自己理解或...
下面的if部分是增加音量。 // The same happens for the button 2If (button_2.isPressed()){Volume--;// this if statement ensures the volume level does not go below zero.If (volume <= 0)Volume = 0;Serial.print(“volume: “);Serial.printIn(volume);Pt2258.setChannelVolume(volume,4);Pt...
大括号中的主要用途 功能 void myfunction(datatype argument){ statements(s) } 循环 while (boolean expression) { statement(s) } do { statement(s) } while (boolean expression); 9 for (initialisation; termination condition; incrementing expr) { statement(s) } 条件语句 if (boolean expression) ...