How to Declare Variables in Batch Script

1. Declare Variables in Batch Script
2. Declare Variables With Numeric Values in Batch Script
3. Declare Variables With String Values in Batch Script

This article will demonstrate how to declare and define variables in Batch Script.

Declare Variables in Batch Script

In Batch, there is no requirement to use any other keyword to declare an integer, float, double, or string type variable.

The general format for declaring variables in a Batch Script is shown below.

Syntax:

set VARIABLE_NAME=VALUE

Let’s see some examples regarding this topic.

Declare Variables With Numeric Values in Batch Script

The example below will demonstrate how to declare a variable and provide it with a numeric value. After that, print the variable value as output.

Example:

@echo off
set numeric_var=20
set numeric_var1=8.979
echo %numeric_var%
echo %numeric_var1%

Output:

20
8.979

Declare Variables With String Values in Batch Script

The below example will demonstrate how to declare a string variable. After that, display the variable value as output.

Example:

@echo off
set string_var=This is a string
echo %string_var%

Output:

This is a string

Remember, all methods discussed here are written using Batch Script and only work in Windows CMD.