Given the following function:

1. Is there a constraint on the values that can be passed as a parameter for this function to answer the Smaller-Caller Question? 2. Is Func(7) a good call? If so, what is returned from the function? 3. Is Func(0) a good call? If so, what is returned from the function? 4. Is Func(-5) a good call? If so, what is returned from the function?

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int Func(int num) { if (num == 0) return 0; else } return num+ Fun (num + 1);