What Is The Output Of The Following Codep Pre Langc #2122

 #include<stdio.h> int cat_number(int n) { int i,j,arr[n],k; arr[0] = 1; for(i = 1; i < n; i++) { arr[i] = 0; for(j = 0,k = i - 1; j < i; j++,k--) arr[i] += arr[j] * arr[k]; } return arr[n-1]; } int main() { int ans, n = 8; ans = cat_number(n); printf("%d\n",ans); return 0; }