View Compilation Error

0_0_2866912_29681.cpp:11: error: expected unqualified-id before "long"
0_0_2866912_29681.cpp: In member function `bool node::operator<(const node&) const':
0_0_2866912_29681.cpp:14: error: 'const struct node' has no member named 'val'
0_0_2866912_29681.cpp:14: error: `val' undeclared (first use this function)
0_0_2866912_29681.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2866912_29681.cpp: In function `void bfs()':
0_0_2866912_29681.cpp:24: error: 'struct node' has no member named 'val'
0_0_2866912_29681.cpp:36: error: 'struct node' has no member named 'val'
0_0_2866912_29681.cpp:38: error: 'struct node' has no member named 'val'
0_0_2866912_29681.cpp:38: error: 'struct node' has no member named 'val'
0_0_2866912_29681.cpp:42: error: 'struct node' has no member named 'val'