What are R keywords?

R keywords are reserved words in the R programming language that have special meaning and cannot be used as variable names or identifiers. These keywords are an essential part of the R syntax, used to define the structure and behavior of the code. Examples of R keywords include:

• if: Used for conditional execution.
• else: Used to define an alternative execution path if the if condition is not met.
• for: Used to create a loop that iterates over a sequence.
• while: Used to create a loop that continues as long as a condition is TRUE.
• return: Used to return a value from a function.

# Example using R keywords
if (TRUE) {
    print("This is an if statement")
} else {
    print("This is an else statement")
}

for (i in 1:5) {
    print(i)
}

In this example, the keywords if, else, and for are used to control the flow of the program. These keywords are integral to writing R scripts, as they allow you to define conditions, loops, and function behaviors.

Understanding R keywords is essential for writing correct and efficient R code, as they form the backbone of the language’s control structures and flow.