1.7 Hello World
To print an output, simply use the function print()
print('Hello Word!')
## [1] "Hello Word!"
Sometimes we would also want to display the value of a variable:
x <- 4
y <- 5
z <- x + y
print(z)
## [1] 9
However, we want to print the description of the variable too. Then we have to use function cat() to combine description and output.
x <- 4
y <- 5
cat('The sum of x and y is', x+y)
## The sum of x and y is 9