#include <stdio.h>

int main()
{
    int counter;
    int N;
    int x;

    printf("Please give a number: ");
    scanf("%d", &N);

    x = N - 1;

    for (counter = 1; counter <= N; counter++)
    {
        int i;

        for (i = 1; i <= x; i++)
        {
            printf(" ");
        }
        x -= 1;

        for (i = 1; i <= 2*counter-1; i++)
        {
            printf("*");
        }
        printf("\n");
    }

    x = 1;

    for (counter = N - 1; counter >= 1; counter--)
    {
        int i;

        for (i = x; i >= 1; i--)
        {
            printf(" ");
        }
        x += 1;

        for (i = 2*counter-1; i >= 1; i--)
        {
            printf("*");
        }
        printf("\n");
    }

    return 0;
}