You can print everything with just passing it to the print
function:
print("Hello World") # String
print(1 + 1) # Integer
print(1.2) # Float
print(true) # Boolean
print('$') # Character
You can read any type of values from user with one of this functions:
ReadStr
ReadInt
ReadFloat
ReadChar
This is an example for ReadInt
function:
var x = ReadInt()