Trouble initializing multidimensional array inside class - c++

Question

So I count with the following excerpt of code:
template<class DT>
class AdjMat
{
protected:
DT** myMatrix;
int noOfNodes;
int noOfEdges;
public:
AdjMat(int _noOfNodes, int _noOfEdges);
//Destructor, constructors and other methods
};
template<class DT>
AdjMat<DT> :: AdjMat(int _noOfNodes, int _noOfEdges)
{
myMatrix = new DT*[_noOfNodes+1];
for(int i = 0; i < _noOfNodes+1; i++)
{
myMatrix[i] = new DT[_noOfNodes+1];
for(int j = 0; j < noOfNodes+1; j++)
myMatrix[i][j] = 0;
}
noOfNodes = _noOfNodes;
noOfEdges = _noOfEdges;
}
int main()
{
adjMat<int> m(5, 9);
}
The problem occurs in the constructor. The array doesn't seem to be initialized at all and much less the inner arrays, I have tried to go in different ways, but it won't initialize anything. Could anyone give me a hint of whatever I am doing wrong?

Answer 1

The error is in this line.
for(int j = 0; j < noOfNodes+1; j++)
noOfNodes has not been initialized yet. You probably meant:
for(int j = 0; j < _noOfNodes+1; j++)
You can avoid such errors by following a safer practice. Initialize as many members as you can in the initializer list.
template<class DT>
AdjMat<DT> :: AdjMat(int _noOfNodes, int _noOfEdges) : noOfNodes(_noOfNodes),
noOfEdges(_noOfEdges),
myMatrix(new DT*[_noOfNodes+1])
{
for(int i = 0; i < noOfNodes+1; i++)
{
myMatrix[i] = new DT[noOfNodes+1];
for(int j = 0; j < noOfNodes+1; j++)
myMatrix[i][j] = 0;
}
}