Exceptions in class

Newsgroup: comp.lang.c++

Subject: Exceptions in class

From: mymailaddressin@...

Date: Mon, 18 Nov 2013 10:33:43 -0800 (PST)



im trying to handling exception in my matriz class. I have no idea how this suppoosed to be



My matriz class its like this



#ifndef Matriz_H

#define Matriz_H



#include <iostream>

#include <iomanip>



using namespace std;



template <typename T> class Matriz ;

template <typename T> std::istream& operator >> ( std::istream &is_in,Matriz <T> &M);

template <typename T> std::ostream& operator << ( std::ostream &os_out, const Matriz <T> &M);



template <typename T>

class Matriz{

friend ostream &operator << <> (ostream &, const Matriz <T> &);

friend istream &operator >> <> (istream &, Matriz <T> &);



public:

Matriz (int = 5, int = 5);

Matriz (const Matriz &);

~Matriz ();



void setSize (int = 5, int = 5);



const Matriz &operator = (const Matriz &);

bool operator == (const Matriz &) const;

Matriz operator * (const Matriz &);

T &operator () (int, int);



private:

int nrows;

int ncols;

T **pntr;

};

#endif



im trying to make the out of range exception in



template <typename T> T &Matriz <T> :: operator()(int rws, int clm) {



// try{

return pntr[rws][clm];

// }

// catch{

// cout << "Out Of Range" << endl;

// }

}

also i would like to know how to handle the invalid type exception



Thanks in advance

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