# How Do You Declare an Integer Data Type?

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Angela Bailey

When working with programming languages, it is essential to understand how data types are declared. In this tutorial, we will focus on declaring an integer data type.

In programming, integers are used to represent whole numbers without any decimal point. They are commonly used for counting, indexing, and performing mathematical operations.

## Declaring an Integer Data Type

In most programming languages, including HTML, you can declare an integer data type using a specific syntax. Let’s take a look at the general structure:

<data_type> variable_name;

The above syntax declares a variable of the integer data type with the given variable name. For example, let’s declare an integer variable named “num”:

int num;

Here, we declared an integer variable named “num.” The “int” keyword signifies that we are declaring an integer data type.

### Assigning a Value to an Integer Variable

After declaring an integer variable, you can assign a value to it using the assignment operator (=). The value assigned must be within the range of the integer data type.

To assign a value to our “num” variable, we can use the following syntax:

variable_name = value;

For example:

• `num = 5;`
• `num = -10;`
• `num = 0;`

In the above examples, we assigned different values to our “num” variable.

### Example: Declaring and Assigning an Integer Variable

To better understand how to declare and assign an integer variable, let’s look at an example:

``````<html>
<title>Integer Variable Example</title>
<body>
Integer Variable Example

<u>var num = 10;</u>

// Output the value of the variable
document.write("The value of num is: " + num);

</body>
</html>``````

In the above example, we declared an integer variable named “num” and assigned it a value of 10. We then outputted the value using JavaScript.

## Conclusion

Congratulations! You have learned how to declare and assign an integer data type in programming languages like HTML.

Remember to use the appropriate syntax and follow the rules of the programming language you are working with. With this knowledge, you can now manipulate integers to perform calculations and solve various programming challenges.