View Compilation Error

0_0_29999951_24196.cpp: In function 'void build(int, int, int)':
0_0_29999951_24196.cpp:27:13: error: expected primary-expression before '/' token
  tr[o].lz=0;/
             ^
0_0_29999951_24196.cpp:28:2: error: expected primary-expression before 'if'
  if(l==r){
  ^