Thread: i need help understanding classes

I really need help with this class I'm in. I understand the basic principles behind the classes, but I'm unsure how to translate what I want to do into code. On one particular project I need to create a user defined matrix, and then give the user the option to add, subtract, multiply, or print the matrix. We are supposed to use classes, but I don't know how to create the classes. I don't know if they go in the header file or the cpp file. I haven't used C++ in 4 years and I'm totally lost. I'm including what I have so far, so if anyone can give me any advice, i would be thankful.

code:

header file
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Code:

#ifndef MATRIXTYPE_H_
#define MATRIXTYPE_H_
	#include <fstream>
	#include <iostream>
	const int MAX_ROWS = 10;
	const int MAX_COLS = 10;
	class MatrixType
	{
	public:
		MatrixType();
		void MakeEmpty();
		void SetSize(int rowSize, int colSize);
		void StoreItem(int item, int row, int col);
		void Add(const MatrixType& otherOperand, MatrixType& result);
 		void Sub(const MatrixType& otherOperand, MatrixType& result);
 		void Mult(const MatrixType& otherOperand, MatrixType& result);
		void Print(std::ofstream& outfile);//Also echo print to console
		bool AddSubCompatible(const MatrixType& otherOperand);
 		bool MultCompatible(const MatrixType& otherOperand);
	private:
		int values[MAX_ROWS][MAX_COLS];
		int numRows;
		int numCols;
	};
#endif

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.cpp file
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Code:

#include “MatrixType.h"
int main()
{
	bool done=false;
	MatrixType TheMatrix[10];	
	//Initialize the program as needed
	while(!done)
	{
		//Print menu choices

		//InitMatrix(index), sets number of rows and columns
		//AddMatrices(indexleft, indexright, indexresult)
		//SubMatrices(indexleft, indexright, indexresult)
		//MultiplyMatrices(indexleft, indexright, indexresult)
		//PrintMatrix(index)
		//Quit
		//Get input
		//Perform task
	}
	return 0;
}

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