After executing the code, you might notice `[1]` parts in the output. R is just letting you know that this line begins with the first value in your result. In future sections, you will meet outputs that contain multiple values.

As you remember, there is no need to use a special function to output values in R.

Assume we want to perform a division.
```
Input:
5/3

Output:
[1] 1.666667
```
Suppose you want to 'round' the number up to a specific number of digits. In that case, you can use the traditional programming languages function `print()`.

Let's consider the function' structure:
```
print(expression, digits = n)
```
For example, we can round the number from the example above to 3 digits.
```
Input:
print(5/3, digits = 3)

Output:
[1] 1.67
```
As you can see, the result of the expression was rounded to three digits.

R is one of the most popular programming languages among data analysts and data scientists. R has a wide community that will always help you with any problem. Also, R has tons of different packages designed to solve various problems. The language can be easily applied to statistics and data analytics problems. In the first part, you will be introduced to the very basics of R and will deal with single 1-D values of different types.

In the first section, you will consider the very basics of R - outputting and performing basic operations. You will finish the section with the variables theory.

In the second section, you will learn the vector class in R, which represents single values too. You will consider the main data types for single values and how to work with multiple values of a kind at once.

Print?

Solução

Print?

Solução