View Compilation Error

0_0_33853752_22470.cpp: In function 'int main()':
0_0_33853752_22470.cpp:18:27: error: 'i' was not declared in this scope
         printf("%d\n",arr[i]);
                           ^
0_0_33853752_22470.cpp:20:34: error: 'i' was not declared in this scope
                 printf("%d ",arr[i]);
                                  ^