View Compilation Error

0_0_11330249_23150.c:3:16: queue: No such file or directory
0_0_11330249_23150.c:5:19: iostream: No such file or directory
0_0_11330249_23150.c:8: error: syntax error before "namespace"
0_0_11330249_23150.c:20: error: syntax error before '<' token
0_0_11330249_23150.c: In function `bfs':
0_0_11330249_23150.c:37: error: `q' undeclared (first use in this function)
0_0_11330249_23150.c:37: error: (Each undeclared identifier is reported only once
0_0_11330249_23150.c:37: error: for each function it appears in.)
0_0_11330249_23150.c: In function `main':
0_0_11330249_23150.c:89: error: `q' undeclared (first use in this function)