COMPUTER PROGRAMMING FUNDAMENTALS
WHAT IS PROGRAMMING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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adds the value of 3 to the sprite lives
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assigns 3 to the variable score
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declares a variable named lives and then initializes the value of lives to 3
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None of the above
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Detailed explanation-1: -When you declare a variable, you should also initialize it. Two types of variable initialization exist: explicit and implicit. Variables are explicitly initialized if they are assigned a value in the declaration statement. Implicit initialization occurs when variables are assigned a value during processing.
Detailed explanation-2: -Variables declared using var are created before any code is executed in a process known as hoisting. Their initial value is undefined .
Detailed explanation-3: -Initializing a variable means specifying an initial value to assign to it (i.e., before it is used at all). Notice that a variable that is not initialized does not have a defined value, hence it cannot be used until it is assigned such a value.