To identify the error in the FindMax function, let’s analyze common mistakes in such implementations:
FindMaxThe most frequent error is initializing the maximum value to a fixed constant (e.g., 0) instead of the first element of the array.
int FindMax(int arr[], int size) {
int max = 0; // ? Wrong initialization
for (int i = 0; i < size; i++) {
if (arr[i] > max) {
max = arr[i];
}
}
return max;
}
If all elements in the array are negative (e.g., [-3, -1, -5]), the function returns 0 (the initial value) instead of the actual maximum (-1). This is because 0 is larger than all negative elements, so the loop never updates max.
Initialize max to the first element of the array (assuming the array is non-empty). For empty arrays, add a check to handle the edge case (e.g., return an error code or throw an exception).
int FindMax(int arr[], int size) {
if (size == 0) {
// Handle empty array (e.g., return INT_MIN or an error)
return INT_MIN;
}
int max = arr[0]; // ? Correct initialization
for (int i = 1; i < size; i++) { // Start loop from index 1
if (arr[i] > max) {
max = arr[i];
}
}
return max;
}
Conclusion: The error is incorrect initialization of the maximum value to a constant (like 0), which fails for arrays with all negative elements. The fix is to initialize max to the first element of the array.
Answer: The function initializes the maximum value to a fixed constant (e.g., 0) instead of the first element of the array, leading to wrong results when all elements are negative. The correct initialization should be max = arr[0] (with empty array handling if needed).
\boxed{The\ maximum\ value\ is\ initialized\ to\ an\ incorrect\ fixed\ value\ (e.g.,\ 0)\ instead\ of\ the\ first\ element\ of\ the\ array.}
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