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How To Create Variables In Go?

Maheshwar Ligade's photo
Maheshwar Ligade
ยทMar 28, 2022ยท

3 min read

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Table of contents

  • Syntax
  • Example
  • Initializing Variables
  • Example
  • Different Types of Variables
  • Rules for Creating Variables
  • Conclusion

In Go, variables are used to store values that can be used throughout your program. Creating variables in Go is a straightforward process and can be done in a few simple steps.

Syntax

To create a variable in Go, you need to use the var keyword followed by the variable name and its type. Here's the basic syntax:

var variable_name data_type

Example

Let's take a look at an example of how to create a variable in Go:

var age int

In this example, we've created a variable called age with a data type of int. This variable can now be used to store integer values.

Initializing Variables

In addition to declaring variables, you can also initialize them with a value. Here's the syntax for initializing a variable:

var variable_name data_type = value

Example

var age int = 30

In this example, we've initialized the age variable with a value of 30. This variable can now be used throughout the program to store and manipulate integer values.

Different Types of Variables

In Go, there are different types of variables you can create, depending on the type of data you want to store. Here are some of the most common variable types in Go:

1. Integer Variables

Integer variables are used to store whole numbers. Here's an example of how to create an integer variable:

var age int = 30

2. Floating-Point Variables

Floating-point variables are used to store decimal numbers. Here's an example of how to create a floating-point variable:

var weight float64 = 68.5

3. Boolean Variables

Boolean variables are used to store true/false values. Here's an example of how to create a boolean variable:

var is_student bool = true

4. String Variables

String variables are used to store text. Here's an example of how to create a string variable:

var name string = "John"

Rules for Creating Variables

When creating variables in Go, there are a few rules you should keep in mind:

  1. Variable names should start with a letter or an underscore.

  2. Variable names can contain letters, numbers, and underscores.

  3. Variable names are case-sensitive.

  4. You cannot use reserved words (like if, else, for, etc.) as variable names.

  5. You must specify a data type for each variable.

  6. You can declare multiple variables in a single line by separating them with commas.

Conclusion

Creating variables in Go is a fundamental aspect of programming in the language. By following the syntax and rules outlined in this article, you can create variables of different types and use them to store and manipulate data in your programs.

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