This interactive R course covers everything from the basics, variables, and data types to advanced topics, such as recursion, file handling, and S3/S4 classes in R.

In today’s data-driven world, the ability to analyze large datasets is becoming a vital skill across industries. R, one of the most powerful languages for data analysis.
This interactive R course is designed for beginners, with no prior knowledge of R programming required. You will begin with fundamental concepts, such as R variables, data types in R, and basic functions like R print and R cat. As you progress, you will dive into more complex topics, including R vectors, lists, arrays, matrices, and data frames in R programming. You’ll also learn how to perform operations using arithmetic operators in R, relational operators in R, and logical operators in R. Further, the course covers advanced features like if statements in R, switch statements in R, loops in R, and recursion in R. 
Finally, you’ll gain hands-on experience with file handling in R, exception handling with try and except in R, and object-oriented programming using S3 and S4 classes in R.

Learn R

# Problem Statement
Run a **loop** from $1$ to $20$ and for each number, print **foo** if it is a multiple of $3$, **bar** if it is a multiple of $5$ and **foo bar** if it's a multiple of both $3$ and $5$.

> Use `cat()` for printing. Remember to print the number as well as the respective statement!

## Sample Output 
```
3 foo 5 bar 6 foo 9 foo 10 bar 12 foo 15 foo bar 18 foo 20 bar
```
## Test Yourself
Write your code in the given area. If you get stuck, you can look at the solution.

testVariable <- 1
while (testVariable <= 20) {

  if(testVariable %% 3 == 0 && testVariable %% 5 == 0)
  {
    cat(testVariable, "foo bar ")
  } else 
  {
    if(testVariable %% 3 == 0)
    {
      cat(testVariable, "foo ")
    }
    if(testVariable %% 5 == 0)
    {
      cat(testVariable, "bar ")
    }
  }
  testVariable = testVariable + 1
}

Let's test your ability to write while loop.

Introduction to R

R variables

Data Structures in R

Operator in R

Conditional Statements in R

Loops in R

Function in R

Input/Output in R

Exception Handling in R

Classes in R

R Programming Challenges

Conclusion

Exercise 10: while Loops

Problem Statement

Sample Output

Test Yourself