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POOwn matrix class multiply operator
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copied!<p>I wrote an IntegerMatrix class to add my own methods to work with matrices. Now I've written a function like this:</p> <pre><code>IntegerMatrix** IntegerMatrix::multiplyMatrix(IntegerMatrix** table2) </code></pre> <p>(It's a double pointer because I'm holding a huge array of pointers to 4x4 2D arrays.) so I simply could do this:</p> <pre><code>matrix1.multplyMatrix(matrix2) </code></pre> <p>One little problem is the <code>*</code> isn't defined for my own class. So I thought to overload this operator that I could do something like this:</p> <pre><code>sum += this->table[i][k] * table2[k][j]; </code></pre> <p>But how can I get the right <code>i</code> and <code>k</code> in the overloaded operator, which is defined like this:</p> <pre><code>IntegerMatrix IntegerMatrix::operator*(const IntegerMatrix & k); </code></pre> <p>The only problem I can't figure out right now is how to get the right values ?</p> <p>EDIT:</p> <p>I've rewrote this and now I have: </p> <pre><code>IntegerMatrix IntegerMatrix::operator*(const IntegerMatrix & table2) { int i, j, k; int sum; IntegerMatrix * result = new IntegerMatrix(SIZE); for (i = 0; i < SIZE; i++) { for (j = 0; j < SIZE; j++) { sum = 0; for (k = 0; k < SIZE; k++) { sum += this->table[i][k] * table2[k][j]; } result[i][j] = sum; } } return *result; } </code></pre> <p>That gives me just an error on the [] :</p> <pre><code>Binary '[' : 'IntegerMatrix' does not define this operator or a conversiont o a type acceptable to the predefined operator. </code></pre>

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