## How to Convert Multidimensional Arrays to Pointers for Library Functions in C ?

Converting Multidimensional Arrays to Pointers in C

In C , multidimensional arrays are not directly compatible with pointers. When attempting to use a library function that takes a double**, converting a double4 array using a simple cast may lead to errors.

To resolve this issue, the array must be adapted to the function's interface. Instead of casting the entire array to double**, create temporary "index" arrays that point to the beginnings of each row:

<code class="cpp">double* startRows[4] = { startMatrix[0], startMatrix[1], startMatrix[2], startMatrix[3] };</code>

<code class="cpp">double* inverseRows[4] = { /* same pattern for inverseMatrix */ };</code>

Pass these "index" arrays to the function as arguments:

<code class="cpp">MatrixInversion(startRows, 4, inverseRows);</code>

After the function completes, the converted result will reside correctly within the inverseMatrix array. The temporary "index" arrays can be discarded. This approach allows for successful pointer-based matrix operations without modifying the original array's structure or the function's interface.

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