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  1. PO
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    <p>Made some modification in your code. Please find fixed code below -</p> <pre><code>#include &lt;iostream&gt; #include &lt;iomanip&gt; using namespace std; // Base class IMatriz; class IMatriz { int **m; int numRows; int numColumns; public: IMatriz(){ numRows = 0; numColumns = 0; m = NULL; } IMatriz(int r, int c) { numRows = r; numColumns = c; m = new int* [numRows]; for(int i=0; i &lt; numRows; i++) m[i] = new int [numColumns]; } virtual void setSize(int r, int c) = 0; virtual void setValue(int row, int col, int val) = 0; virtual int getValue(int row, int col) = 0; virtual int getNumRows() = 0; virtual int getNumColumns() = 0; virtual void mult(IMatriz &amp;a, IMatriz &amp;b) = 0; virtual void print(void) = 0; }; // Inherited class Matriz : public IMatriz { protected: int **m; int numRows; int numColumns; public: Matriz() : IMatriz() { } Matriz(int r, int c) : IMatriz(r, c) { numRows = r; numColumns = c; m = new int* [numRows]; for(int i=0; i &lt; numRows; i++) m[i] = new int [numColumns]; } void setSize(int r, int c); void setValue(int row, int col, int val); int getValue(int row, int col); int getNumRows(); int getNumColumns(); void mult(IMatriz &amp;a, IMatriz &amp;b); void print(); }; // Functions void Matriz::setSize(int r, int c) { numRows = r; numColumns = c; } void Matriz::setValue(int row, int col, int val) { m[row][col] = val; } int Matriz::getValue(int row, int col) { return m[row][col]; } int Matriz::getNumRows() { return numRows; } int Matriz::getNumColumns() { return numColumns; } void Matriz::mult(IMatriz &amp;a, IMatriz &amp;b) { // m.setSize( a.getNumRows(), b.getNumColumns() ); // for (int rows = 0; rows &lt; numRows; rows ++) // for (int cols = 0; cols &lt; numColumns; cols ++) // m[rows][cols] = 0; // for (int rows = 0; rows &lt; a.getNumRows(); rows ++) // for (int cols = 0; cols &lt; b.getNumColumns(); cols ++) // for (int auxl = 0; auxl &lt; a.getNumColumns(); auxl ++) // m[rows][cols] += (a[rows][auxl] * b[auxl][cols]); return; } void Matriz::print() { for (int rows = 0; rows &lt; numRows; rows ++) { for (int cols = 0; cols &lt; numColumns; cols ++) cout &lt;&lt; m[rows][cols] &lt;&lt; " "; cout &lt;&lt; endl; } } // Principal int main(int argc, const char * argv[]) { Matriz m; Matriz a(3, 2); Matriz b(2, 3); a.setValue(0,0,7); a.setValue(0, 0, 7); a.setValue(1, 0, 1); a.setValue(2, 0, 8); a.setValue(0, 1, 2); a.setValue(1, 1, 5); a.setValue(2, 1, 6); b.setValue(0, 0, 2); b.setValue(1, 0, 3); b.setValue(0, 1, 5); b.setValue(1, 1, 4); b.setValue(0, 2, 8); b.setValue(1, 2, 9); a.print(); b.print(); // m.mult(a,b); // m.print(); return 0; } </code></pre> <p>This is the output i get on xcode console - </p> <pre><code>7 2 1 5 8 6 2 5 8 3 4 9 </code></pre>
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    1. This table or related slice is empty.
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    1. COHi there, thanks, let me try that
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    2. COyeah I have the same, but it is have to run the function mult everithing is comment
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    3. COsomething like this void Matriz::mult(IMatriz &a, IMatriz &b) { this->setSize( a.getNumRows(), b.getNumColumns() ); for (int rows = 0; rows < numRows; rows ++) for (int cols = 0; cols < numColumns; cols ++) m[rows][cols] = 0; for (int rows = 0; rows < a.getNumRows(); rows ++) for (int cols = 0; cols < b.getNumColumns(); cols ++) for (int auxl = 0; auxl < a.getNumColumns(); auxl ++) m[rows][cols] += (a.getValue(rows,auxl) * b.getValue(auxl,cols)); return; }
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