/wrkdirs/usr/ports/math/the-algorithms-c++/work/C-Plus-Plus-2dadbf7/data_structures/queue_using_array2.cpp:12:9: error: reference to 'queue' is ambiguous   12 |         queue[rear++] = x;      |         ^/wrkdirs/usr/ports/math/the-algorithms-c++/work/C-Plus-Plus-2dadbf7/data_structures/queue_using_array2.cpp:4:5: note: candidate found by name lookup is 'queue'    4 | int queue[10];      |     ^/usr/include/c++/v1/queue:301:28: note: candidate found by name lookup is 'std::queue'  301 | class _LIBCPP_TEMPLATE_VIS queue {      |                            ^/wrkdirs/usr/ports/math/the-algorithms-c++/work/C-Plus-Plus-2dadbf7/data_structures/queue_using_array2.cpp:22:25: error: reference to 'queue' is ambiguous   22 |         cout << "\n" << queue[front++] << " deleted";      |                         ^/wrkdirs/usr/ports/math/the-algorithms-c++/work/C-Plus-Plus-2dadbf7/data_structures/queue_using_array2.cpp:4:5: note: candidate found by name lookup is 'queue'    4 | int queue[10];      |     ^/usr/include/c++/v1/queue:301:28: note: candidate found by name lookup is 'std::queue'  301 | class _LIBCPP_TEMPLATE_VIS queue {      |                            ^