[C] Nora suka bagi bintang

#include <stdio.h>


int main()
{
    int x = 0;
    int y = 0;
    int i = 0;
    int z = 0;
    int *pnum = NULL;

    printf("Please enter two numbers: \n");
    scanf_s("%d%d", &x, &y);

    pnum = &z;
    *pnum = x*y;


    if (z > 0)
    {

        printf("Nora bagi ");
        for (i = 0; i < z; i++)
        {
            printf("*", *pnum);
        }
        printf(" bintang\n");
    }


    else
    {
        printf("Noob\n");
    }


    return 0;

}