What is the most effective way to initialize a variable before an if-else statement?

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The most effective way to initialize a variable before an if-else statement is to assign a default value to the variable. This ensures that the variable has a value before the if-else statement is executed, and it prevents any potential errors that could occur from using an uninitialized variable. For example, if you were testing whether a user is logged in or not, you could initialize a boolean variable called "loggedIn" to false, and then change its value to true if the user is logged in.