View Compilation Error

0_0_16366110_874.cpp: In function 'int bfs(int)':
0_0_16366110_874.cpp:55:3: error: expected primary-expression before '.' token
  }.
   ^
0_0_16366110_874.cpp:56:2: error: expected unqualified-id before 'int'
  int flag=1;
  ^
0_0_16366110_874.cpp:57:34: error: 'flag' was not declared in this scope
  for (i=1;i<=n;i++) if (!vis[i]) flag=0;
                                  ^
0_0_16366110_874.cpp:58:9: error: 'flag' was not declared in this scope
  return flag;
         ^