Number

An number value.

A Number is a numeric value that is an integer or a rational number. Numbers are stored in multiple bytes in floating point format. This is so that numbers with a fractional portion can have precise calculations perfomed on them.

Some examples of different types of number values:

• 67 - positive integer
• -345 - negative integer
• 0 - zero
• 19.43 - floating point
• -45.245 - negative floating point
• 0.4567 - fractional floating point
• 8.23e+21 - floating point with exponent notation

Declare a number variable

You can assign a number to a variable:

let num = 42;
basic.showNumber(42);

For example the following code gets the display brightness (using the brightness function) and stores the value in a variable named brightness:

let brightness = led.brightness()

Arithmetic operators

The following arithmetic operators work on numbers and return a Number:

• addition: 1 + 3
• subtraction: 1 - 3
• multiplication: 3 * 2
• integer division: 7 / 3
• modulo is available through the math library

Relational operators

The following relational operators work on numbers and return a Boolean:

• equality: (3 + 1) = 4
• inequality: 3 != 4
• less or equal than: 3 <= 4
• less than: 3 < 4
• greater or equal than : 4 >= 3
• greater than: 4 > 3

Show number

The show number function displays a number on the LED screen. For example, this code displays the number 42:

basic.showNumber(42);