Code Trouble

[Outerblob]

include <cstring>
#include <iostream>
#include <ctime>
#include <cstdlib>

int main(void)
{
using namespace std;
srand(unsigned int(time(0)));
unsigned n = 1234567890;
char buf[rand() % 255 + 1]; 
_itoa(n, buf, 62);
cout << "Your Password is: " << buf << "\n";
system("pause");
return 0;
}

(11) : error C2057: expected constant expression
(11) : error C2466: cannot allocate an array of constant size 0
(11) : error C2133: 'buf' : unknown sizeI have the errors:
I know what the problem is but I don't how to fix it.

[Return 0]

I'm not clear on what your asking. Are you looking to populate the char array with random numbers?

[Outerblob]

Exactly, and make the program print out random characters.
I did the array part already, but I can't get it to print random characters.

[Zhuge]

On line 11 you are allocating a char array with a non-constant size. If you want a dynamic size, you need to use dynamic allocation.

char *buf = new char[rand % 255 + 1];