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What do you mean by undeclared and undefined variables ?

Correct Answer: Difference between undeclared and undefined variables is defined as Undeclared variables are those that do not exist in a program and are not declared If the program tries to read the value of an undeclared variable, then a runtime error is encountered Undefined variables are those that are declared in the program but have not been given any value If the program tries to read the value of an undefined variable, an undefined value is returned

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