View Compilation Error

0_0_22324843_15756.cpp: In function 'int main()':
0_0_22324843_15756.cpp:124:9: error: 'w' was not declared in this scope
         w=b=0;
         ^
0_0_22324843_15756.cpp:124:11: error: 'b' was not declared in this scope
         w=b=0;
           ^
0_0_22324843_15756.cpp:127:29: error: 'x' was not declared in this scope
             scanf("%d%d%d",&x,&y,&d);
                             ^
0_0_22324843_15756.cpp:127:32: error: 'y' was not declared in this scope
             scanf("%d%d%d",&x,&y,&d);
                                ^
0_0_22324843_15756.cpp:127:35: error: 'd' was not declared in this scope
             scanf("%d%d%d",&x,&y,&d);
                                   ^
0_0_22324843_15756.cpp:140:13: error: 'val' was not declared in this scope
             val=1;
             ^
0_0_22324843_15756.cpp:142:13: error: 'val' was not declared in this scope
             val=0;
             ^
0_0_22324843_15756.cpp:143:17: error: 'val' was not declared in this scope
         if(bfs1(val))
                 ^