Question: c++ template T** allocate_twod(int* sizes); template T* deallocate_twod(T** twod, int size); template bool **init_plane(); template bool reserve(bool **plane, int row, int seat); // reserve seat

c++ 
template T** allocate_twod(int* sizes); template T* deallocate_twod(T** twod, int size); template bool **init_plane(); template bool reserve(bool **plane, int row, int seat); // reserve seat template bool cancel(bool** plane, int row, int seat); // cancel seat template void print_plane(bool **plane); // print plane

output :

ABCD

ABCD

ABCD

ABCD

if booked

ABCX

ABXD

ABCD

ABCD

make a seat reservation and cancel reservation

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