Массив: определить количество учеников в классе, чей рост превышает средний.

#include <iostream>
 
using namespace std;
 
const int n=10;
 
int main()
{
    float a[n],k=0;
    float s=0;
    for(int i=0;i<n;i++){
            a[i]=rand()%20;
            s+=a[i];
            }         
    s/=n;
    for(int i=0;i<n;i++)
        if(a[i]>s) k++;
    cout<<k;
    system("pause>0");
}

#include <iostream>
#include <algorithm>
#include <numeric>
#include <random>
 
int main()
{
    std::random_device rand;
    std::mt19937 gen(rand());
    std::uniform_int_distribution <> distr(1, 12);
    const int arrSize = 20;
    int array[arrSize];
    for (auto &i: array)
        std::cout << (i = distr(gen)) << " ";
    double average = std::accumulate(array, array + arrSize, 0) / arrSize;
    std::cout << std::endl << std::count_if(array, array + arrSize, [&average] (int currNum) -> bool {
        return currNum > average;
    }) << std::endl;
    return 0;
}

#include <iostream>
 
int main ()
{
    const int countOfStudents = 5;
    double array[countOfStudents];
 
    double sumOfGrowthes = 0;
    std::cout << "Student's growthes: " << std::endl;
    for (int i = 0; i < countOfStudents; i++) {
        std::cin >> array[i];
        sumOfGrowthes += array[i];
    }
 
    double average = sumOfGrowthes / countOfStudents;
    std::cout << "Average: " << average << std::endl;
 
    int currCount = 0;
    for (int i = 0; i < countOfStudents; i++)
        currCount += array[i] > average ? 1 : 0;
    std::cout << "Count of students: " << currCount << std::endl;
 
    return 0;
}

#include <iostream>
 
int main ()
{
    const int countOfStudents = 5;
    double array[countOfStudents];
 
    int i;
    double sumOfGrowthes = 0;
    std::cout << "Student's growthes: " << std::endl;
    for (i = 0; i < countOfStudents; i++) {
        std::cin >> array[i];
        sumOfGrowthes += array[i];
    }
 
    double average = sumOfGrowthes / countOfStudents;
    std::cout << "Average: " << average << std::endl;
 
    int currCount = 0;
    for (i = 0; i < countOfStudents; i++)
        currCount += array[i] > average ? 1 : 0;
    std::cout << "Count of students: " << currCount << std::endl;
 
    return 0;
}