First R program in R Programming - Mini Project: Build & Apply

First R program

📖 Scenario: You want to learn how to write your very first program in R. This program will simply store a message and then show it on the screen.

🎯 Goal: Build a simple R program that stores a greeting message in a variable and then prints it.

📋 What You'll Learn

Create a variable called message with the exact text "Hello, R world!"

Create a variable called exclamation_count and set it to 1

Use a paste0() function to add exclamation_count number of exclamation marks to message

Print the final message using print()

💡 Why This Matters

🌍 Real World

Writing simple scripts to display messages is the first step in learning R programming, useful for data analysis reports and automation.

💼 Career

Basic R programming skills are essential for data analysts and scientists to manipulate data and communicate results.

1

Create the message variable

Create a variable called message and set it to the exact string "Hello, R world!".

R Programming

# Create a variable called message with the text "Hello, R world!"
# Your code here

Need a hint?

Use the assignment operator <- to assign the string to message.

2

Add exclamation count variable

Create a variable called exclamation_count and set it to the number 1.

R Programming

message <- "Hello, R world!"
# Create a variable called exclamation_count and set it to 1
# Your code here

Need a hint?

Use the assignment operator <- to assign the number 1 to exclamation_count.

3

Add exclamation marks to the message

Use the paste0() function to add exclamation_count number of exclamation marks to the end of message. Store the result back in message.

R Programming

message <- "Hello, R world!"
exclamation_count <- 1
# Add exclamation marks to message using paste0() and strrep()
# Your code here

Need a hint?

Use strrep("!", exclamation_count) to repeat the exclamation mark.

4

Print the final message

Print the variable message using the print() function.

R Programming

message <- "Hello, R world!"
exclamation_count <- 1
message <- paste0(message, strrep("!", exclamation_count))
# Print the message
# Your code here

Need a hint?

Use print(message) to show the message on the screen.