Getting Started with R

# R uses <- for assignment (= also works but <- is idiomatic)
x <- 42
name <- "Alice"
is_valid <- TRUE

# Print values to the console
print(x)
cat("Hello,", name, "\n")

# Basic arithmetic
a <- 10
b <- 3
cat("Sum:     ", a + b, "\n")
cat("Diff:    ", a - b, "\n")
cat("Product: ", a * b, "\n")
cat("Quotient:", a / b, "\n")
cat("Integer div:", a %/% b, "\n")
cat("Modulo:  ", a %% b, "\n")
cat("Power:   ", a ^ b, "\n")

# Check data types
class(x)          # "numeric"
class(name)       # "character"
class(is_valid)   # "logical"
typeof(x)         # "double"

# Accessing built-in help
# ?mean          # opens help page for mean()
# help("lm")     # opens help page for lm()

# Simple sequence and basic stats
nums <- 1:20
cat("Length:", length(nums), "\n")
cat("Mean:  ", mean(nums),   "\n")
cat("Sum:   ", sum(nums),    "\n")