Answer the following statements true (T) or false (F)
1. When a variable is declared in the initialization expression of a for loop, the scope of the variable is limited to the loop.
2. In the update expression of a for loop, you must use the ++ operator in the increment expression.
3. In a counter-controlled loop, you can only decrement the counter variable.
4. The do-while loop always performs at least one iteration, even if its Boolean expression is false to begin with.
1. true
2. false
3. false
4. true
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