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37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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int *pascallarr(int iarrsize, int *ptr){
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int *mypascallar = malloc(sizeof(int) * iarrsize + 1);
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/* declare edges, as they're always 1 anyways so we can start the loop at 1 (so i-1 = 0) */
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mypascallar[0] = 1;
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mypascallar[iarrsize] = 1;
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for (int i = 1; i <= iarrsize; i++) {
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if (i < iarrsize) {
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mypascallar[i] = ptr[i-1] + ptr[i];
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}
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}
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return mypascallar;
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}
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int main() {
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int trianglesize = 18;
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int ** pnumbers;
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/* create pascals triangle, on row i, we have i numbers */
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/* should create 2d array of ints, with an array of pointers to arrays*/
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int **ptrtriangle = malloc(sizeof(int *)*trianglesize);
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/* need to create a function that returns the pointer to an array of i numbers filled with numbers */
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for (int i = 0; i < trianglesize; i++) {
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ptrtriangle[i] = pascallarr(i,ptrtriangle[i-1]);
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for (int j = 0; j <= i; j++) {
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printf("%d|",ptrtriangle[i][j]);
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}
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printf("\n");
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}
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return 0;
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}
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