# create a variable to hold the text message = "Hello World" # print the text stored in the variable print(message) 在前面的代码中,我向我们的hello_world.py程序添加了两行注释。我还添加了一个空行来帮助使代码更容易阅读。如果您保存并运行这个程序,您将得到与之前完全相同的输出。您还可以使用三重...
11.12 double(双精度浮点数) 11.13 string( char array/字符串) 11.14 String object( String类) 11.15 array(数组) 十二、数据类型转换 12.1 char() 12.2 byte() 12.3int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域&修饰符 13.1 variable scope(变量的作用域) 13.2 static(静态变量) 13.3...
11.12 double(双精度浮点数) 11.13 string(char array/字符串) 11.14 String object(String类) 11.15 array (数组) 十二、数据类型转换 12.1 char() 12.2 byte() 12.3 int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域 &修饰符 13.1 variable scope(变量的作用域) 13.2 static(静态变量) 13....
// Serial.available() returns the number of bytes that are in serial buffer if (Serial.available() 》 0) { // if it is, read it and store into letter variable char letter = Serial.read(); if(letter == ‘1’) { digitalWrite(LED_BUILTIN, HIGH); // write back on serial line Se...
11.14 String object(String类) 11.15 array (数组) 十二、数据类型转换 12.1 char() 12.2 byte() 12.3 int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域 & 修饰符 13.1 variable scope(变量的作用域) 13.2 static(静态变量) 13.3 volatile ...
The original or newly incremented / decremented value of the variable. 返回变量原始值或增加/消耗后的新值。 Examples范例 x = 2; y = ++x; // x now contains 3, y contains 3 // x现在为3,y为3 y = x--; // x contains 2 again, y still contains 3 // x现在仍然为2,y将为3...
5、1.13 string(char array/字符串)11.14 String object(String类)11.15 array (数组)十二、数据类型转换12.1 char()12.2 byte()12.3 int()12.4 word()12.5 long()12.6 float()十三、变量作用域 & 修饰符13.1 variable scope(变量的作用域)13.2 static(静态变量)13.3 volatile13.4 const十四、辅助工具14.1 size...
myservo.write(pos); // tell servo to go to position in variable'pos' delay(15); // waits 15ms for the servo to reach the positin } } /*判断红外接收信息*/ void getRemoteDo() { String codeString; if (irrecv.decode(&results)) ...
// Value received from master if store in variable slavereceivedreceived = true; //Sets receiv...
命令variable.toUppercase()用于将小写字符更改为大写。 然后它根据每个角色创造声音。 void loop() { char inChar = 0; char inData[100] = ""; // data length of 6 characters String variable = ""; String variable1 = ""; int index1 = 0; if ( Serial.available() > 0 ) { while (Serial...