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D365 F&O Technical Module 12: X++ Overview

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Q: What is the VAR keyword used for in X++?

A To define a variable that can change data types
B To define a variable of a type that the compiler will determine.
C To define an array type variable
D To define a container
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Answer: B

Explanation:

Justification:

A variable cannot change data type without explicitly changing or converting the data type with a code statement.
The VAR keyword allows a variable to be defined without explicitly specifying the type; the compiler will automatically determine the data type based on the mandatory initialization expression.
An array can be declared using a data type. For example, “int myArray[10]”, declares an array of type integer with up to 10 values.
A container is declared using the container keyword. For example, “container myContainer”. A container can store variables of mixed data types.

Related Lesson: Variable Declaration

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