Add an else
You can only use an else
statement in combination with an if
statement. The else
statement does not require a condition; its corresponding code is simply run if all of the preceding conditions in the control structure are FALSE
. Here's a recipe for its usage:
if (condition) {
expr1
} else {
expr2
}
It's important that the else
keyword comes on the same line as the closing bracket of the if
part!
Both if
statements that you coded in the previous exercises are already available to use. It's now up to you to extend them with the appropriate else
statements!
This exercise is part of the course
Intermediate R
Exercise instructions
Add an else
statement to both control structures, such that
- "Unknown medium" gets printed out to the console when the if-condition on
medium
does not hold. - R prints out "Try to be more visible!" when the if-condition on
num_views
is not met.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Variables related to your last day of recordings
medium <- "LinkedIn"
num_views <- 14
# Control structure for medium
if (medium == "LinkedIn") {
print("Showing LinkedIn information")
}
# Control structure for num_views
if (num_views > 15) {
print("You're popular!")
}