Course Content
Flowgorithm Features
Flowgorithm Features
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Flowgorithm User Interface
Flowgorithm User Interface
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Flowgorithm Flowchart Shapes
Flowgorithm Flowchart Shapes
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Flowgorithm Data Types
Flowgorithm Data Types
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Flowgorithm Comments
Flowgorithm Comments
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Flowgorithm Numbers
Flowgorithm Numbers
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Flowgorithm Strings
Flowgorithm Strings
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Flowgorithm File Format
Flowgorithm File Format
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Flowgorithm Program Attributes
Flowgorithm Program Attributes
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IPO Chart
IPO Chart ( Input, Process and Output Chart )
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First Flowgorithm Flowchart
First Flowgorithm Flowchart
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Add Two Numbers Flowchart
Add Two Numbers Flowchart
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Flowgorithm Quiz
Flowgorithm Quiz
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Flowgorithm Beginner Exercises
Flowgorithm Beginner Exercises
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Flowgorithm Beginner Course
About Lesson

Create Variables

The Declare statement creates variables in the flowchart. This symbol can also be used to create multiple variables. Creating variables in the flowchart is a two-step process.

  • Declare the Variable
  • Store/Assign a value to the Variable.

Examples

Let’s create a single variable called ‘age’ of the datatype Integer. The steps are outlined below:

Launch Flowgorithm software.

Right-click on the flow control line. Choose the Declare symbol under the Variables section. 

Create Single Variable Flowgorithm

 

In the Variables Names: box, specify the variable name as age. Choose the Type: as Integer. 

Click on the OK button to create the variable. 

Create Variable Flowgorithm Window

Store a value

When we create a variable with the Declare symbol, its initial value is undefined or uninitialized. We can use the Assign symbol to store a value in the variable. 

 

Points to remember

A variable must be declared before it can be used in the flowchart. The interpreter will throw an error if it encounters a variable that is not declared. 

Variable Not Declared Flowgorithm

For example, the error screen shows that the sum variable is used without declaration.

 

A variable can change its value during the program’s lifetime. Let’s understand this concept with an example. 

Create a variable called x. Let’s assign multiple values to the variable x and check its output. 

Flowgorithm Variable Multiple Assignments

Notice that variable x holds different values we assigned during the flowchart run. Initially, x holds a value of 56, but with the second assignment statement, we changed the x value to 79.