arduino Variables and Data Types Variable types
Example
char: signed 1-byte character valuebyte: unsigned 8-bit integerint: signed 16-bit (on ATMEGA based boards) or 32-bit (on Arduino Due) integerunsigned int: unsigned 16-bit (on ATMEGA based boards) or 32-bit (on Arduino Due) integerlong: signed 32-bit integerunsigned long: unsigned 32-bit integerfloat: 4-byte floating point numberdouble: 4-byte (on ATMEGA based boards) or 8-byte (on Arduino Due) floating point number
Examples:
char a = 'A';
char a = 65;
byte b = B10010;
int c = 2;
unsigned int d = 3;
long e = 186000L;
unsigned long f = millis(); // as an example
float g = 1.117;
double h = 1.117;
