View Compilation Error

0_0_38575342_17405.cpp: In function 'int main()':
0_0_38575342_17405.cpp:28:41: error: 'ix' was not declared in this scope
                       printf("%d\n",*(--ix));
                                         ^~
0_0_38575342_17405.cpp:28:41: note: suggested alternative: 'it'
                       printf("%d\n",*(--ix));
                                         ^~
                                         it