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Last updated 10:39 AM on 3/18/26
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5 Terms
1
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Global Scope
Variable defined outside a function, and outside a class
automatically initialized to 0
can be accessed by all functions
2
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Local Scope
inside a function, formal parameter list, or inside a block
only exists in the respective one
destroyed when function returns
3
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Block scope
inside if/while/etc.
destroyed when loop/block finishes
4
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is same variable name in same scope allowed?
no
must not have same var name in same scope
even if type is different
compiler error
5
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if same variable name in nested scope, eg. int j; (inside function), int j; (inside function’s block)
it picks the one in the same block, and the one defined above
