#include <stdio.h>
#include <stdlib.h>

int *pascallarr(int iarrsize, int *ptr){
    int *mypascallar = malloc(sizeof(int) * iarrsize + 1);
    /* declare edges, as they're always 1 anyways so we can start the loop at 1 (so i-1 = 0) */
    mypascallar[0] = 1;
    mypascallar[iarrsize] = 1;
    for (int i = 1; i <= iarrsize; i++) {
        if (i < iarrsize) {
            mypascallar[i] = ptr[i-1] + ptr[i];
        }
    }
    return mypascallar;
}

int main() {
    int trianglesize = 18;
    int ** pnumbers;

    /* create pascals triangle, on row i, we have i numbers */

    /* should create 2d array of ints, with an array of pointers to arrays*/

    int **ptrtriangle = malloc(sizeof(int *)*trianglesize);

    /* need to create a function that returns the pointer to an array of i numbers filled with numbers */
    for (int i = 0; i < trianglesize; i++) {
        ptrtriangle[i] = pascallarr(i,ptrtriangle[i-1]);
        for (int j = 0; j <= i; j++) {
            printf("%d|",ptrtriangle[i][j]);
        }
        printf("\n");
    }
    return 0;
}