Variable Assignment

Assigning variables and numeric data types

x <- 10
y <- 5
x + y 
z <- x + y

a <- z - x
b <- y / z
c <- x^3
d <- a * b * c

# Check class of object
class(a)

Character Strings

a <- "Hello"
class(a)

textString <- paste("The result of your calculation is", d)
textString

n <- "85"
class(n)
n <- as.numeric(n)
class(n)
n <- as.character(n)
class(n)

n + 1 # should generate an error since you can do arithmetic on character string
as.numeric(n) + 1