2443번: 별찍기 - 6

#include<cstdio>
int main()
{
    int n, sp = 0, st;
    scanf("%d", &n);
    st = 2 * n - 1;
    for (int i = n; i--; printf("\n"))
    {
        for (int i = 0; i < sp; ++i)
            printf(" ");
        for (int i = 0; i < st; ++i)
            printf("*");
        ++sp;
        st -= 2;
    }
}