View Compilation Error

0_0_18282704_441.cpp: In function 'int main()':
0_0_18282704_441.cpp:22:55: error: expected primary-expression before 'if'
   for(int i = 1; i <= n; ++ i) if(ind[i] & 1) ++ cnt, if(ind[i]) ans ^= a[i]; 
                                                       ^