تحديات برمجيةالتحدي الثالث - حل التمرين الأول بلغة C++

#include <iostream>

int main() {

    int n;

    do {
        std::cout << "Enter the number of lines: ";
        std::cin >> n;
    }
    while (n <= 0);

    for (int i = 1; i <= n; i++)
    {
        if (i <= n / 2)
        {
            for (int k = 1; k < (n / 2) - i + 2; k++)
            {
                std::cout << " ";
            }

            std::cout << "*";
            
            for (int j = 1; j < (i * 2) - 1; j++)
            {
                std::cout << "*";
            }
        }
        else
        {
            for (int k = 1; k < i - (n / 2); k++)
            {
                std::cout << " ";
            }
            
            std::cout << "*";

            for (int j = 1; j <= (n * 2) - (i * 2); j++)
            {
                std::cout << "*";
            }
        }
        std::cout << "\n";
    }

    char end; std::cin >> end;
    return 0;

}

#include <iostream>

int main() {

    int n;

    do {
        std::cout << "Enter the number of lines: ";
        std::cin >> n;
    }
    while (n <= 0);

    for (int i = 1; i <= (n / 2) + 1; i++)
    {
        for (int k = 1; k < (n / 2) - i + 2; k++)
        {
            std::cout << " ";
        }

        std::cout << "*";
        
        for (int j = 1; j < (i * 2) - 1; j++)
        {
            std::cout << "*";
        }

        std::cout << "\n";
    }

    for (int i = 1; i <= (n / 2); i++)
    {
        for (int k = 1; k <= i; k++)
        {
            std::cout << " ";
        }
        
        for (int j = 1; j < ((n / 2) * 2) - (i * 2) + 2; j++)
        {
            std::cout << "*";
        }

        std::cout << "\n";
    }

    char end; std::cin >> end;
    return 0;

}

Enter the number of lines: 9
    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *