This tutorial will introduce you to the foundation of all things random — the simple random number.

Generating Random Numbers

Random numbers are generated using a function that generates random numbers.

PlayBasic has 4 functions that generate random numbers :

• Rnd()
• Rnd#()
• RndRange()
• RndRange#()

Random Integers

Rnd() generates a random integer between 0 and it's argument.

In other words, if you wanted to generate a number between 0 and 10 you'd use Rnd() like this :

rndInt = Rnd(10)

Print rndInt

Sync
WaitKey

If you already know s BASIC dialect other than PlayBasic, you'll expect Rnd() to generate a number with a decimal fraction. Rnd#() does this. See Generating Random Floats below.

Range of Random Integers

RndRange() generates a range of random integers.

To generate random range of numbers between 5 and 10, you'd use RndRange() this way :

rndInt = RndRange( 5, 10 )

Print rndInt

Sync
WaitKey

Generating Random Floats

Rnd#() generates a float between 0 and a number below it's argument.

In other words, if you wanted to generate a number between 0 and 9.99_, you'd use Rnd#() this way :

rndFloat# = Rnd#(10)

Print rndFloat#

Sync
WaitKey

Range of Random Floats

RndRange#() generates a float between two numbers. The high number will always be just below it's second argument, as with Rnd#().

To generate a random float between 5 and 9.99_ :

rndFloat# = Rnd#( 5, 10 )

Print rndFloat#

Sync
WaitKey