113. Searching and Sorting-I

Question.7

A developer calls a find-max function on an empty ADC buffer (no samples yet):

int find_max(int arr[], int n) {
   int max = arr[0];
   for (int i = 1; i < n; i++) {
       if (arr[i] > max) max = arr[i];
   }
   return max;
}

int result = find_max(adc_buf, 0);  // n = 0

What happens?

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Returns 0 — the array is empty so max defaults to 0
Undefined behavior — arr[0] is accessed even though n = 0, reading uninitialized or out-of-bounds memory
The loop doesn't execute and returns the initial max, which is safe
Compilation error — n = 0 is not a valid array size

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