View Compilation Error

0_0_28200415_22913.cpp: In function 'void update(int, int, int)':
0_0_28200415_22913.cpp:23:64: error: 'val' was not declared in this scope
  for(register int i=l; i<=min(B[l]*Big,r); i++)if(A[i]!=v)A[i]=val;
                                                                ^
0_0_28200415_22913.cpp:26:55: error: 'val' was not declared in this scope
   for(int i=(B[r]-1)*Big+1; i<=r; i++)if(A[i]!=v)A[i]=val;
                                                       ^