find max value in array c++

#include <iostream>

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

int main() {
    int arr[] = {5, 8, 3, 12, 9};
    int n = sizeof(arr) / sizeof(arr[0]);
    int max = findMaxValue(arr, n);
    std::cout << "The maximum value in the array is: " << max;
    return 0;
}