Main.cc: In function 'int main()': Main.cc:16:5: error: 'cum' was not declared in this scope y[cum] = yu; ^ Main.cc:20:14: error: 'cum' was not declared in this scope for(int i = cum-1;i >= 0;i--){ ^ Main.cc:21:14: error: invalid types 'int[int]' for array subscript cout << z[i]; ^