x >= y (x is greater than or equal to y) 警告: 小心偶然地使用单个等号(例如if(x = 10))。单个等号是赋值运算符,这里设置x为10(将值10存入变量x)。改用双等号(例如if (x == 10)),这个是比较运算符,用于测试x是否等于10。后者只在x等于10时返回真,但是前者将总是为真。 这是因为C如下求值...
if ((Measured_temp >= Desired_temperature+4) && AC == false) //If AC is off and measured Temp is greater than Desired Temp { irsend.sendRaw(ACon, sizeof(ACon) / sizeof(ACon[0]), khz); delay(2000); //Send Signal to Turn On the AC delay(2000); irsend.sendRaw(Temp27, sizeof...
; if(i == j) Serial.println(" i is equal to j"); if(i >= j) Serial.println(" i is greater than or equal to j"); if(i > j) Serial.println(" i is greater than j"); Serial.println(); i = i + 1; if(i > j + 1) delay(10000); } 3 程序效果如下：通过串...
#ifndef SUPPORT_MCU_FIRM_UPDATE #define WIFI_UART_RECV_BUF_LMT 128 //UART data receiving buffer size, can be reduced if the MCU has insufficient RAM #define WIFI_DATA_PROCESS_LMT 60 //UART data processing buffer size, according to the user DP data size, must be greater than 24 完成串...
#defineDEFAULT1#defineEXTERNAL0#endif// undefine stdlib's abs if encountered#ifdef abs #undef abs #endif #definemin(a,b)((a)<(b)?(a):(b))#definemax(a,b)((a)>(b)?(a):(b))#defineabs(x)((x)>0?(x):-(x))#defineconstrain(amt,low,high)((amt)<(low)?(low):((amt)>(hi...
=y(xisnotequaltoy)IIIIII.I;x<y(xislessthany)Irxy(xisgreaterthany)Iix=y(xislessthanorequaltoy)II*IIx>=y(xisgreaterthanorequaltoy)警告:小心偶然地使用单个等号(例如if(x=10)。单个等号是赋 35、值运算符,这里设置x为10(将值10存入变量x).改用双等号(例如if(x=10),这个是比较运算符,...
if (s11 > p11) // if servo position is greater than programmed position { if ((s11 - sp1) >= p11) s11 = s11 - sp1; // set servo position equal to servo position minus speed constant else s11 = p11; } // Back Left Pivot Servo ...
if (i < 255) { i++;//if pin0 is pressed and the duty ratio value is less than 255 delay(30); } } if (digitalRead(1) == LOW) { if (i > 0) { i--;// if pin1 is pressed and the duty ratio value is greater than 0 ...
//We have to be careful here. If we request a measurement before the measurement has been taken your //code will be blocked until the measurement is complete. In order to stop this from happening we //must ensure that time between measurement requests is greater than the timing budget and...
= (not equal to) < (less than) > (greater than) <= (less than or equal to) >= (gr... 文档格式:PDF | 页数:144 | 浏览次数:936 | 上传日期:2012-10-28 12:35:21 | 文档星级: 1 Language Reference 目录 一 Structure setup() loop() 1.1Control Structures if if...else for switch...