View Compilation Error

0_0_17675670_18490.cpp: In function 'void CSH()':
0_0_17675670_18490.cpp:48:43: error: invalid conversion from 'bian*' to 'int' [-fpermissive]
     for(int i=0;i<loc;i++)b[i].to=b[i].fan=b[i].next=0;
                                           ^