How to define different variable types?

In programming, different variable types allow you to store various kinds of data. Here's how to define some common variable types in a few popular programming languages:

C++

int integerVar = 10;          // Integer type
float floatVar = 5.5;        // Floating-point type
double doubleVar = 3.14159;  // Double precision floating-point type
char charVar = 'A';          // Character type
std::string stringVar = "Hello"; // String type

Python

integer_var = 10              # Integer type
float_var = 5.5               # Float type
string_var = "Hello"          # String type
list_var = [1, 2, 3]          # List type
dict_var = {"key": "value"}   # Dictionary type

Java

int integerVar = 10;          // Integer type
float floatVar = 5.5f;       // Float type
double doubleVar = 3.14159;   // Double type
char charVar = 'A';           // Character type
String stringVar = "Hello";   // String type

JavaScript

let integerVar = 10;          // Number type (JavaScript uses a single number type)
let floatVar = 5.5;           // Number type
let stringVar = "Hello";      // String type
let arrayVar = [1, 2, 3];     // Array type
let objectVar = {key: "value"}; // Object type

Summary

• Integer: Whole numbers (e.g., int, Integer).
• Float/Double: Decimal numbers (e.g., float, double).
• Character: Single characters (e.g., char).
• String: Text (e.g., String, string).
• Array/List: Collection of items (e.g., array, list).
• Object/Dictionary: Key-value pairs (e.g., object, dict).

Further Learning

For more in-depth exploration, consider checking out LabEx labs on variable types and data structures in your preferred programming language.

Feel free to ask if you have more questions!