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POInherited Class Problems
 

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  1. POInherited Class Problems
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    <p>I have the next code and i dont know how to solve the mult function. the compiler send me a message cannot declare parameter 'a' to be of type 'Matriz'</p> <p>I'm supposed to use exactly the code that is in the main</p> <p>The message is <strong>cannot declare parameter 'a' to be of type 'Matriz'</strong> </p> <pre><code>enter code here #include &lt;iostream&gt; #include &lt;iomanip&gt; using namespace std; // Base 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 a, IMatriz 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(Matriz a, Matriz 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(Matriz a, Matriz 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() { 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>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USKarlaE
    1. USKarlaE
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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      1. PTAnswer
    3. PO
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      1. PTAnswer
    1. VO
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      1. POInherited Class Problems
      1. This table or related slice is empty.
      1. VTUpMod
    1. COHow about including the full compile message and highlighting the line that has the problem?
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      1. POInherited Class Problems
      1. USJohn3136
    2. CO@BergQuester It seems we can infer from his screen name as well :)
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      1. POInherited Class Problems
      1. USTerry Li
    3. COYou're allocating memory inside constructors, but never freeing it inside a destructor, let alone following the Rule of Three or Rule of Zero.
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      1. POInherited Class Problems
      1. USchris
 

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