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setting size of 2-D array at constructor issue

Nov 24th, 2008

I am trying to pass the size of the matrix array during the constructor but its giving me the following error. Is there a different way to do this?

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In file included from Main.cpp:1:
AdjacencyMatrix.h: In constructor ‘AdjacencyMatrix::AdjacencyMatrix(int, std::string)’:
AdjacencyMatrix.h:13: error: ‘numberOfNodes’ cannot appear in a constant-expression
In file included from Main.cpp:1:
AdjacencyMatrix.h: In constructor ‘AdjacencyMatrix::AdjacencyMatrix(int, std::string)’:
AdjacencyMatrix.h:13: error: ‘numberOfNodes’ cannot appear in a constant-expression

Line 13 is the constructor declaration.

Here is my code

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#include<string>
#include<fstream>
 
using namespace std;
 
class AdjacencyMatrix {
private:
	bool* matrix;
public:
	AdjacencyMatrix(int const numberOfNodes, string fileName)
	{
		matrix = new bool[numberOfNodes[numberOfNodes];		//two dimensional array
		populateArray(fileName);
	}
	void populateArray(string filName);
};
#include<string>
#include<fstream>

using namespace std;

class AdjacencyMatrix {
private:
	bool* matrix;
public:
	AdjacencyMatrix(int const numberOfNodes, string fileName)
	{
		matrix = new bool[numberOfNodes[numberOfNodes];		//two dimensional array
		populateArray(fileName);
	}
	void populateArray(string filName);
};

Thanks in advance