View Compilation Error

0_0_25897485_28070.cpp:22:13: error: invalid declarator before 'q'
 queue<node> q;
             ^
0_0_25897485_28070.cpp: In function 'int bfs()':
0_0_25897485_28070.cpp:33:13: error: 'q' was not declared in this scope
     while (!q.empty())
             ^
0_0_25897485_28070.cpp:36:2: error: 'q' was not declared in this scope
  q.push((node){sx, sy, 0, 0, 0});
  ^