View Compilation Error

0_0_33404903_29073.cpp: In function 'void updata(int, int, int, int, ll)':
0_0_33404903_29073.cpp:41:43: error: 'update' was not declared in this scope
     if(pos<=mid) update(l,mid,num<<1,pos,d);
                                           ^
0_0_33404903_29073.cpp:42:5: error: 'els' was not declared in this scope
     els
     ^
0_0_33404903_29073.cpp:42:5: error: expected '}' at end of input