Variables
A variable is a named location in memory that holds a value. The name can then be used to access or modify that value.
Variables are essential in R because they allow you to store values for later use, making code easier to write, read, and maintain.
Naming Rules
- A variable name can include letters, numbers, dots(
.), and underscores(_); - A variable name can only start with a letter or a dot;
- If a variable name starts with a dot, the next character can't be a number;
- A variable name cannot be the same as a reserved keyword, such as
TRUE,FALSE,NA, etc.
Choose meaningful names that describe the data. For example, year is more descriptive than a. This improves code readability.
Assignment Syntax
To assign a value to a variable, the assignment operator = can be used.
Example
12year = 2020 cat(year)
Swipe to start coding
You want to prepare values for a deposit calculation. Save the following data into variables:
2000asinitial_money;13asinterest_rate;4asn_years.
Then, use cat() to display these values together in the same order.
Рішення
Дякуємо за ваш відгук!
single
Запитати АІ
Запитати АІ
Запитайте про що завгодно або спробуйте одне із запропонованих запитань, щоб почати наш чат
Чудово!
Completion показник покращився до 2.27Variables
Свайпніть щоб показати меню
A variable is a named location in memory that holds a value. The name can then be used to access or modify that value.
Variables are essential in R because they allow you to store values for later use, making code easier to write, read, and maintain.
Naming Rules
- A variable name can include letters, numbers, dots(
.), and underscores(_); - A variable name can only start with a letter or a dot;
- If a variable name starts with a dot, the next character can't be a number;
- A variable name cannot be the same as a reserved keyword, such as
TRUE,FALSE,NA, etc.
Choose meaningful names that describe the data. For example, year is more descriptive than a. This improves code readability.
Assignment Syntax
To assign a value to a variable, the assignment operator = can be used.
Example
12year = 2020 cat(year)
Swipe to start coding
You want to prepare values for a deposit calculation. Save the following data into variables:
2000asinitial_money;13asinterest_rate;4asn_years.
Then, use cat() to display these values together in the same order.
Рішення
Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантівДякуємо за ваш відгук!
single
