Krazykoder variables
Download as PPT, PDF0 likes4 views
Variables are used to store and modify different data types like numbers, text, and booleans. Common variable data types include integers, longs, floats, doubles, booleans, and characters. Variables can store data through assignment like setting the number of days in a week to 7 or a name to a string. Data can also be modified through operations that change the value stored in a variable, such as adding or multiplying two integer variables.
Krazykoder variables
- 2. Variables are used for storing and modifying data Variables can store numbers and text The main data types are: int long float double boolean char
- 3. Examples of storing data: int daysOfWeek = 7; String employeeName = "John Smith";
- 4. Examples of modifying data: first_number = 20; second_number = first_number + 35; answer = first_number * second_number;
- 5. Rules: Variable names can't start with a number. Variable names can't be the same as Java keywords. Variable names can't have spaces them.