Putting a Column into a Row

if (!my_id)

{MPI_Send(&A[0][2], 1, col_t, 1, 0, MPI_COMM_WORLD);}

else if (my_id==1)

{MPI_Recv(&A[2][0], 10, MPI_DOUBLE, 0, 0, MPI_COMM_WORLD, &status);}

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