double pointer problem..

[never9]

#include <iostream.h>
void main()
{
char **pp = new char*[10];
char *p[10];
for(int i=0; i<10; i++)
p[i] = new char[10];
p[0] = "This";
p[1] = " is";
p[2] = " a";
p[3] = " test";
p[4] = " version.";
p[5] = " You";
p[6] = "know?";
p[7] = " I";
p[8] = " love";
p[9] = " you..";
for(i=0; i<10; i++)
{
pp[i] = p[i];
cout << pp[i] << endl;
}

for(i=0; i<10; i++)
delete [] pp[i]; // <== Here is the problem
delete [] pp;
}

This is my test version of double pointer.
Almost everything is executed well.
But the execution is halted in the arrow marked
position.
Could you give me a solution to this problem.
I programmed this source in Visual C++ 6.0.
I can't understand the fact that
when I execute this source in Debug mode,
the execution is halted but in Release mode,
it's OK.
Need your help

There appears to be more than one problem with that source.

1) although you declare

char *p[10];

you then use

p = new char[10]; // in your contest you are creating
// 10, 10 char arrays and assigning
// each array the same address effectively
// overwriting the previous on

I think what you actually meant to say was

p[i] = (char *)new char[10];

2. you use

p[0] = "This";

and you actually intend

strcpy(p[0],"This");

3. In your delete loop you are actually delete pp 10 times?
You allocate it once, and should only delete it once. So this loop
should look something like

for (int i = 0; i < 10 ; i++)
{
delete [] p[i];
}
delete [] pp;


Look at this source and see if isn't closer to way you intend
#include <string.h>
#include <iostream.h>

char *samples[] =
{
{ "This" },
{ "is" },
{ "a" },
{ "test" }
};

void main()
{
char **pp = new char * [4];
for(int i=0; i<4; i++)
{
pp[i] = (char*)new char[10];
strcpy(pp[i],samples[i]);
}


for(i=0; i<4; i++)
delete [] pp[i] ;
delete [] pp;
}

[Radman]

Hey, i'm not used to all this pointer stuff, even though i use them alot,...

Whats the delete []pp;

mean???

Word,
Ryan "Radman" Du Bois

[David Langis]

It should be a good idea to use j for counters instead of i as i between brackets is the tag for putting text in italic.

delete the array pp;