Problem with a program

[krutuk]

Hi everybody! I need somebody's help. I have a segmentation fault in this program and don't know how to fix it. Please, help!
Here is a code:

#include <iostream>

#define C 3
#define R 4

using namespace std;

void d(int**);

void f(int mat[][4])
{
	int **p, **n;
	int *h;
	
	p=new int*[C];
	for(int i=0; i<C; i++)
		p[i]=new int[R];
	
	n=new int*[C];
	for(int i=0; i<C; i++)
		n[i]=new int[R];

	for(int i=0; i<C; i++)
	{
		for(int j=0; j<R; j++)
			p[i][j]=mat[i][j];
	}

	n=p;
        int i, j;
	for(n=p, i=0; i<C; n++, i++)
	{
		for(h=*n, j=0; j<R; h++, j++)
			cout<<*h<<" ";
		cout<<endl;
	}
	d(p);   //I have a segmentation fault in line
	d(n);   //or in this one, I exactly don't know
}

void d(int **p)
{
	for(int i=0; i<C; i++)
		delete[] p[i];
	delete[] p;
}

int main()
{
	int mat[C][R]={{1,2,3,4},{1,2,3,4},{1,2,3,4}};
	f(mat);

	return 0;
}

[jlb]

This program won't compile for me. It has several errors in the following snippet:

	n=p;
	for(n=p, i=0; i<C; n++, i++)
	{
		for(h=*n, j=0; j<R; h++, j++)
			cout<<*h<<" ";
		cout<<endl;
	}

Several of the variables are giving errors because they have not been defined.

[krutuk]

Oh, I'm sorry during coppying this program here I missied 1 string. Fixed now.

[Chervil]

After n=p; has been executed, the original value of n is lost.
Call function d before that line:

	d(n);  
	n=p;

[jlb]

First why are you trying to delete the same memory twice? When you assigned n to p on line 29 you lost the pointer to the memory n was pointing to. The same in your loop assignment. So when you try to delete n in your function n no longer points to valid memory, you already deleted p.

[krutuk]

Chervil, thanks. You helped me very much.