View Compilation Error

0_0_24002568_723.cpp: In function 'void findEight(int)':
0_0_24002568_723.cpp:33:16: error: return-statement with a value, in function returning 'void' [-fpermissive]
         return 0;
                ^
0_0_24002568_723.cpp:39:17: error: 'B' was not declared in this scope
         if(B(x,r)){
                 ^