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what is the scoping rule of a variable?
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the scoping rule of a variable is a set of rules that determine the visibility and accessibility of variables inside a program. a variable's scope is the region of the program in which it is visible and can be used. the scope of a variable may be local, meaning it can be accessed in a specific region of the program such as within a function, or it may be global, meaning it can be accessed anywhere within the program. in many programming languages, variables that are declared inside a block of code (for example, within an if statement or loop) are considered to have a local scope and are not visible outside of the block in which they are declared.
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