代码示例1 * %d = signed integer %f = floating point number * %s = string %.1f = float to 1 decimal place * %c = character %.3f = float to 3 decimal places * %e = scientific notation %g = shortest representation of %e or %f * %u = unsigned integer %o = unsigned octal * %x =...
1. Atlas Ph探头 这是一个末端带有镀金BNC连接器的Ph传感器探头。这款pH探头采用优质结构和坚固的...
Wstring.h,Arduino自定义的String类,依赖于stdlib.h/string.h的函数。 Wcharater.h,Arduino定义的字符类型操作,如判断、转换。依赖于ctype.h的转换函数。 #include<stdlib.h>// string to double or floatdoubleatof(constchar*s);floatatoff(constchar*s);// string to integerintatoi(constchar*s);// =...
Arduino支持多种数据类型,包括int、float、char、char array(字符串字面量)等。要将这些数据类型转换为字符串,通常使用String类或C风格的字符串操作函数。 2. 编写Arduino代码将数据类型转换为字符串 使用String类 Arduino提供了String类来方便地处理字符串。以下是将int和float类型转换为String对象的示例: cpp String...
com_port || verbose == VerboseMode::nothing) return; com_port->println(number); } void Commander::println(const float number) { if (!com_port || verbose == VerboseMode::nothing) return; com_port->println((float)number, (int)decimal_places); } void Commander::println(const char *...
2、= 8复合或|= 8变量 8常量 8宏定义 8整型常量 8浮点数常量 9数据类型 9void 9boolean 10char 10unsigned char 10byte 10int 10unsigned int 10word 10long 10unsigned long 10float 10double 10string 10String(c+) 10array 10数据类型转换 10char() 10byte() 10int() 10word() 10long() 10float...
Serial.println(stringOne); // using a float and less decimal places to use rounding: stringOne = String(5.698, 2); Serial.println(stringOne); // do nothing while true: while (true); } 串口: 16:39:47.782 -> &⸮P 16:39:47.782 -> <⸮Fq⸮ n⸮⸮⸮0u8⸮ ...
Don't use a float when an int will do. Don't use an int when a byte will do. Try to use the smallest data type capable of holding the information. Try to use only integers Using floating point (decimal) numbers causes code bloat and more memory usage. Printing a floating point numbe...
long Unsigned long short float double array String-chararray String-object 关键字 说明 void void关键字仅用于函数声明。它表示该函数预计不会向调用它的函数返回任何信息。 例子 Void Loop ( ) { // rest of the code } 1. 2. 3. Boolean 布尔值保存两个值之一,true或false。每个布尔变量占用一个字...
z = (float)x / 2.0;// z now contains .5 (you have to use 2.0, not 2) ※ NOTES AND WARNINGS: If doing math with floats, you need to add a decimal point, otherwise it will be treated as an int. See theFloating pointconstants page for details. ...