03 Variables
String()
a constant string of characters, in double quotes (i.e. a char array)
a single constant character, in single quotes
another instance of the String object
an integer or long integer variable
an integer or long integer variable, using a specified base
a float or double, using a specified decimal places
Constructing a String from a number results in a string that contains the ASCII representation of that number. The default is base ten, so
gives you the String "13".
You can use other bases, however. For example,
gives you the String "d", which is the hexadecimal representation of the decimal value 13.
Or if you prefer binary,
gives you the String "1101", which is the binary representation of 13.
String(val)
String(val, base)
String(val, decimalPlaces)
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.
Returns
An instance of the String class.
Method Examples