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Logical Operators
Using logical operators, you can combine two or more relational operators to produce a single
true/false result. These blocks allow you to further refine your comparison of values.
Operator Meaning
The result is true only if the two expressions are true.
1. AND
The result is true only if either of the expressions is true.
2. OR
The result is true only if the expressions is false.
3. NOT
VARIABLES
Variables are used to hold values. These are the data values for which
the value can be changed when the code is being processed. There
are two ways in which the values can be assigned to the variables—
by the programmer and by the user.
Each programming language has a method or syntax for defining
variables. In Scratch, the variables can be created using Variables
blocks.
To create a variable, follow these steps:
Step 1 Click on Variables category of blocks.
Step 2 Click on Make a Variable button to open the New
Variable dialog box.
Variables block
Step 3 Type a suitable name, for example N1 for the variable in
the New variable name text box.
New variable dialog box
Step 4 Select an option specifying whether the variable is to be
created For all sprites or For this sprite only.
Step 5 Click on OK button.
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