= y (x is not equal to y) x < y (x is less than y) x > y (x is greater than y) x <= y (x is less than or equal to y) 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
println("The strings are not equal."); } 使用String类的equals()方法 如果使用的是Arduino的String类,则可以使用equals()方法来比较两个字符串。 cpp String str1 = "hello"; String str2 = "hello"; if (str1.equals(str2)) { Serial.println("The strings are equal."); } else { Serial....
#if(NOT CONFIG_FREERTOS_HZ EQUAL1000AND NOT"$ENV{ARDUINO_SKIP_TICK_CHECK}") # # See delay()incores/esp32/esp32-hal-misc.c. # message(FATAL_ERROR"esp32-arduino requires CONFIG_FREERTOS_HZ=1000"#"(currently ${CONFIG_FREERTOS_HZ})") # endif() 但是,老周建议不要注释掉这段代码,最好...
DELAY2: INC R18 BRNE delay2; BRanch if Not Equal INC R16 BRNE delay1 INC R19 BRNE delay0 BREAK RJMP output //这里的代码先不去研究了,它的功能是让13号引脚的led灯每隔0.5秒闪一下。原理大概就是寄存器操作,然后delay,循环。 5.配置为Release,选择【Build->Build Solution】编译代码。 这时编译后...
= y (x is not equal to y) x y (x is greater than y) 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...
The “!=” operator in Arduino code means “not equal to.” This is a comparison operator used to evaluate if two values are not the same. In an Arduino program, this operator can be used to check whether a variable has a certain value or not. For example, you could compare two numb...
!=(not equal to) <(less than) <=(less than or equal to) ==(equal to) >(greater than) >=(greater than or equal to) Boolean Operators !(logical not) &&(logical and) ||(logical or) Pointer Access Operators &(reference operator) ...
Comparison Operators == (equal to) != (not equal to) < (less than) > (greater than) <= (less than or equal to) >= (greater than or equal to) Boolean Operators && (and) || (or) ! (not) From here on I'll address only the code within loop(). void loop() { delay(100)...
equal to not equal to lt less than gt greater than lt less than or equal to gt greater than or equal to 1.5Boolean Operators ampamp and 2 or not 1.6Pointer Access Operators dereference operator amp reference operator 1.7 Bitwise Operators amp bitwise and bitwise or bitwise xor bitwise not ...
while break continue return goto 1.2Further Syntax semicolon curly braces // single line comment / / multi-line comment define include 1.3Arithmetic Operators assignment operator addition - subtraction multiplication / division modulo 1.4Comparison Operators equal to not equal to lt less than gt ...