Why control flow directs execution in R Programming - See It in Action

Why control flow directs execution

📖 Scenario: Imagine you are organizing a small event and need to decide what to do based on the weather forecast.

🎯 Goal: You will write a simple R program that uses control flow to decide what activity to do depending on the weather.

📋 What You'll Learn

Create a variable called weather with the value "sunny"

Create a variable called activity and set it to an empty string

Use an if statement to set activity to "Go for a walk" if weather is "sunny"

Use an else if statement to set activity to "Read a book indoors" if weather is "rainy"

Use an else statement to set activity to "Stay home and relax" for any other weather

Print the value of activity

💡 Why This Matters

🌍 Real World

Control flow is used in real life to make decisions, like choosing what to do based on the weather or other conditions.

💼 Career

Understanding control flow is essential for programming jobs because it allows software to react differently depending on inputs or situations.

1

Create the weather variable

Create a variable called weather and set it to the string "sunny".

R Programming

# Create the weather variable
# Your code here

Need a hint?

Use the assignment operator <- to assign the value "sunny" to weather.

2

Create the activity variable

Create a variable called activity and set it to an empty string "".

R Programming

weather <- "sunny"
# Create the activity variable
# Your code here

Need a hint?

Assign an empty string "" to the variable activity.

3

Use if-else to decide the activity

Use an if statement with the condition weather == "sunny" to set activity to "Go for a walk". Then use else if with weather == "rainy" to set activity to "Read a book indoors". Finally, use else to set activity to "Stay home and relax".

R Programming

weather <- "sunny"
activity <- ""
# Use if-else statements to set activity based on weather
# Your code here

Need a hint?

Use if, else if, and else blocks to check the value of weather and assign the correct string to activity.

4

Print the activity

Write a print() statement to display the value of the variable activity.

R Programming

weather <- "sunny"
activity <- ""
if (weather == "sunny") {
  activity <- "Go for a walk"
} else if (weather == "rainy") {
  activity <- "Read a book indoors"
} else {
  activity <- "Stay home and relax"
}
# Print the activity
# Your code here

Need a hint?

Use print(activity) to show the chosen activity.