if-then-else StatementAn if-then-else statement is executed by first evaluating the Expression. If evaluation of the Expression completes abruptly for some reason, then the if- then-else statement completes abruptly for the same reason. Otherwise, execution continues by making a choice based on the resulting value:
true, then the first contained Statement (the one before the else keyword) is executed; the if-then-else statement completes normally only if execution of that statement completes normally.false, then the second contained Statement (the one after the else keyword) is executed; the if-then-else statement completes normally only if execution of that statement completes normally.