Arduino String类构造方法和以及常用方法详解

Posted 2021-10-08 perseverance52

Arduino String类构造方法和以及常用方法详解

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作为数据类型引用

• String s1 = "hello";//定义了一个String类型的变量s1并给它赋值内容。
• String thisString = String(13, HEX);//等价于thisString=“d”
• String thisString = String(13, BIN);//等价于thisString =“1101”

String()语法

• String(val)
• String(val, base)
• String(val, decimalPlaces)

参数：val: a variable to format as a String. Allowed data types: string, char, byte, int, long, unsigned int, unsigned long, float, double.
base: (optional) the base in which to format an integral value.
decimalPlaces: only if val is float or double. The desired decimal places.