Массив: Вычислить количество отрицательных элементов в заданном массиве

#include <cstddef>
#include <cstdlib>
#include <iostream>
#include <cmath>
 
 
void fill_arr(float * arr, size_t size) {
    for (int i = 0; i < size; ++i)
        arr[i] = static_cast <float> (rand()) / (static_cast <float> (RAND_MAX/20)) - 10;
}
 
void print_arr(const float * arr, size_t size) {
    for (int i = 0; i < size; ++i)
        std::cout << arr[i] << " ";
    std::cout << std::endl;
}
 
void print_count_negs(const float * arr, size_t size) {
    size_t count = 0;
    for (int i = 0; i < size; ++i)
        if (arr[i] < 0)
            count++;
    std::cout << "count negs: " << count << std::endl;
}
 
void print_sum_abs_after_min(const float * arr, size_t size) {
    float sum = 0;
    size_t smallestIndex = size-1;
    for (size_t index = smallestIndex; index > 0; --index)
        if (arr[smallestIndex] >= arr[index])
            smallestIndex = index;
    for (size_t index = smallestIndex+1; index < size; ++index)
        sum += abs(arr[(int)index]);
    std::cout << "sum abs after min (" << smallestIndex << ": " << arr[smallestIndex] << "): " << sum << std::endl;
}
 
void replace_negs_squares(float * arr, size_t size) {
    for (size_t i = 0; i < size; ++i)
        if (arr[i] < 0)
            arr[i] *= arr[i];
    std::sort(arr, arr+size);
    std::cout << "repl negs with squares and sort: ";
    print_arr(arr, size);
}
 
int main () {
    srand(time(NULL));
    auto * arr = new float[10];
    fill_arr(arr, 10);
    print_arr(arr, 10);
    print_count_negs(arr, 10); // 1.
    print_sum_abs_after_min(arr, 10); // 2.
    replace_negs_squares(arr, 10); // 3.
 
    delete [] arr;
    return 0;
}