In R, you can add comments to your code using the “hash symbol (#)”. Any text following the hash symbol on the same line will be treated as a comment and will not be executed. Comments help explain your code, making it more readable and understandable.
Single-Line Comments in R
R only supports single-line comments drafted by a “#” symbol. Single-line comments are comments that require only one line.
Syntax
# comment statement
Example
# This is the first comment in this example
data_1 <- 101
if (data_1 > 99) {
print("You have hit the century")
} else {
print("You are out in nervous ninty")
}
The comment does not impact this example if you run the above code.
If you only write the comment in the code, it will not produce any output.
# This is the first comment in this example
If you run the above code, it won’t produce any output.
Multiline Comments
Multiline comments are not directly supported in R language, but we can just insert a “#” for each line to create multiline comments.
# This is the first comment in this example
# The second comment
# written in
# more than just one line
data_1 <- 101
if (data_1 > 99) {
print("You have hit the century")
} else {
print("You are out in nervous ninty")
}
That’s it for the comments in R.

Krunal Lathiya is a Software Engineer with over eight years of experience. He has developed a strong foundation in computer science principles and a passion for problem-solving. In addition, Krunal has excellent knowledge of Data Science and Machine Learning, and he is an expert in R Language.