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How to Convert a 2D Array to a Pointer-to-Pointer?

Mary-Kate Olsen
Mary-Kate OlsenOriginal
2024-11-11 19:45:03480browse

How to Convert a 2D Array to a Pointer-to-Pointer?

Converting a 2D Array to a Pointer-to-Pointer

Your request to convert a 2D array to a pointer-to-pointer raises compatibility issues. These two data types have distinct semantics, making a direct conversion impractical.

However, if it's essential in your application, you can employ an intermediate step to bridge the semantic gap:

Activity solution[a][b];

// Create an array of pointers to each row of the 2D array
Activity *solution_rows[a] = { solution[0], solution[1] /* and so on */ };

// Assign the pointer-to-pointer variable to the row index array
Activity **mother = solution_rows;

This intermediate array, solution_rows, serves as a stepping stone between the 2D array and the pointer-to-pointer. Now, accessing mother[i][j] will effectively access solution[i][j].

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