不使用stl计算一组整数数组中的元素数

#include <iostream>

int countElements(int arr[], int size) {
    int count = 0;
    for (int i = 0; i < size; i++) {
        count++;
    }
    return count;
}

int main() {
    int arr[] = {1, 2, 3, 4, 5};
    int size = sizeof(arr) / sizeof(arr[0]);
    int elementCount = countElements(arr, size);
    std::cout << "Number of elements in the array: " << elementCount << std::endl;
    return 0;
}