View Compilation Error

0_0_29192204_18339.cpp: In function 'void update(int, int, int, int, ll)':
0_0_29192204_18339.cpp:29:37: error: expected primary-expression before '%' token
  else update(p<<1|1,mid+1,r,pos,op);%0
                                     ^
0_0_29192204_18339.cpp:29:38: error: expected '}' at end of input
  else update(p<<1|1,mid+1,r,pos,op);%0
                                      ^