#include <stdio.h>

int main()
{
    int n = 5;
    for (int i = 0; i < n; i++)
    {
        for (int j = n - 1; j > i; j--)
        {
            printf(" ");
        }

        for (int k = 0; k < i + 1; k++)
        {
            printf("* ");
        }
        printf("\n");
    }

    for (int i = 0; i < n - 1; i++)
    {
        for (int j = 0; j < i + 1; j++)
        {
            printf(" ");
        }

        for (int k = n - 1; k > i; k--)
        {
            printf("* ");
        }
        printf("\n");
    }

    return 0;
}