cppAvgFrom5Marks

#include <iostream>

int main()
{
    const int marksCount{ 5 };
    const int passGrade{ 4 };
    int mark{ 0 };
    int markSum{ 0 };

    std::cout << "Enter 5 marks one by one\n";

    std::cin >> mark;
    markSum += mark;

    std::cin >> mark;
    markSum += mark;

    std::cin >> mark;
    markSum += mark;

    std::cin >> mark;
    markSum += mark;

    std::cin >> mark;
    markSum += mark;

    const float avgGrade{ (float)markSum / marksCount };
    if (avgGrade >= passGrade)
    {
        std::cout << "You allowed to take exam!";
    }
    else
    {
        std::cout << "You not allowed to take exam!";
    }
    return 0;
}