#include <stdio.h>
#include <conio.h>

main()
{
    int a,b,c,d,e,sayi,s1,s2;
    
    printf("Tek sayi giriniz: ");
    scanf("%d",&sayi);
    for(a=1; a<sayi-1; a=a+2)
    {
        for(s1=((sayi+1)-a)/2; s1>0; s1--)
        {
            printf(" ");
        }
        for(b=1; b<sayi+a; b++)
        {
            printf("*");
        }
        printf("\n");
    }
    for(c=1; c<=(2*sayi)-1; c++)
    {
        printf("*");
    }
    printf("\n");
    for(d=sayi-2; d>0; d=d-2)
    {
        for(s2=1; s2<=((sayi+1)-d)/2; s2++)
        {
            printf(" ");
        }
        for(e=1; e<sayi+d; e++)
        {
            printf("*");
        }
        printf("\n");
    }
    getch();
}