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What are the differences between undeclared and undefined variables

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  • What are the differences between undeclared and undefined variables

    What are the differences between undeclared and undefined variables

  • #2
    undeclared undefined
    These variables do not exist in a program and are not declared These variables declared in the program but have not assigned any value
    If you try to read the value of an undeclared variable, then a runtime error is encountered If you try to read the value of an undefined variable, an undefined value is returned.

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