Little confusion Regarding general Initilizaion..!!!

[kunalnandi]

Hello,

I have some confusion with Initilization of int.

#include <iostream>
 
using namespace std;
int main()
{
	int *p = new int[4];
	for( int i = 0; i < 6568; i++ )
	{
		p[i] = i;
		cout << i << " ->> " << p[i] << endl;
	}	
	return 0;
}

#include <iostream>

using namespace std;
int main()
{
	int *p = new int[4];
	for( int i = 0; i < 6568; i++ )
	{
		p[i] = i;
		cout << i << " ->> " << p[i] << endl;
	}	
	return 0;
}

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Above, i have initilize int *p = new int[4];
when i run this program on windows it get crashed after printing

Output :
0 ->> 0
.
.
.
.
6567 ->> 6567

why is it so ????


And instead of Initilizing like this
int *p = new int[4];

if i initilize
int *p = new int[100];

then on running this example it get crahsed on 182 ?
why is it so ???

Output :
0 ->> 0
.
.
.
.
182 ->> 182

can any body explain me why this happens ?
normally we expect that int[100] will take more values int[4], but its completely different here..!!

can any body tell me what does these below initilization says..!!

int *p = new int();
int *p = new int(10);
int *p = new int[10];

Thanks & Best Regards
Kunal Nandi