Password Generator

Question

How can we generate 8 character password including alphanumeric characters? And at least one from numbers, symbols, lower and upper characters must be in password.

Answer 1

nice question, I got the basic 8 character password generator from community codes(it's in my code section password maker), but it needs to follow your atleast one of all types rule, so working on it.

Answer 2

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

using namespace std;

static const char alphanum[] =
"0123456789"
"!@#$%^&*"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";

static const char alphanum_Num[] = "0123456789";

static const char alphanum_Sym[] =
"!@#$%^&*"
;

static const char alphanum_Upp[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ";

static const char alphanum_Low[] =
"abcdefghijklmnopqrstuvwxyz";

int size = sizeof(alphanum) - 1;

int main()
{
//password length
int n;
char a;

srand(time(0));
cout << alphanum_Num [rand() % 9];
cout << alphanum_Sym [rand() % 7];
cout << alphanum_Upp [rand() % 25];
cout << alphanum_Low [rand() % 25];

for (int i = 0; i < 4; i++)
{
cout << alphanum[rand() % size];
}
return 0;
}