IC

qscr/c/pascaltriangle.c

@@ -0,0 +1,36 @@
+#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;
+}