password加密问题

#include <iostream>
#include <string>
#include <vector>
using namespace std;

bool my_2818(vector<string> * myvector);

int main()
{
bool sum = true;
vector<string> * myvector = new vector<string>;
vector<string>::iterator it;
while(sum == true)
sum = my_2818( myvector );
it = myvector->begin();
while(it < myvector->end())
{
cout<<*it<<endl;
it++;
}
system("pause");
return 0;
}

bool my_2818(vector<string> * myvector)
{
int n;
cin>>n;
if(n == 0)
{
return false;
}
int * data = new int
;
int *length = new int
;
for(int i=0;i<n;i++)
{
cin>>data[i];
length[i] = 0;
}

for(int j,i=0;i<n;i++)
{
j = data[i]-1;
length[i]++;
while(true)
{
if(j == i)
break;
j = data[j]-1;
length[i]++;
}
}

int k;
string a;
char* b = new char
;
char c;
while(true)
{
cin>>k;
if(k == 0)
break;
for(int i=0;i<n;i++)
{
b[i] = ' ';
}
getline(cin,a,'\n');
a=a.substr(1,a.length()-1);
while(a.length()<n)
a+=' ';

for(int i=0;i<n;i++)
{
int j = k % length[i];
int m = i;
while(j>0)
{
m = data[m]-1;
j--;
}
b[m] = a[i];
}
string result="";
for(int j=0;j < n;j++)
result+=b[j];

myvector->push_back(result);
}
myvector->push_back("");
return true;
}