a very easy bag problem

[DANNY123]

I am trying to output the partition of the integer n;such as n=2+3+5=10;My code actually works but I don't know how to output all the solves.
for example ,you input n=10, it shows ,2,3,4; but when you input 10,it dosen't work.

//package problem
#include <iostream>
using namespace std;

bool done(int n)
{
return(n==0);
};
void finalarray(int*b,int&t)
{
cout<<"the solve is :"<<endl;
for(int i=0;i<t;i++)
cout<<b[i];
};
int main()
{
  bool rec[8];
    int b[10];
    int n;
int a[8]={1,2,3,4,5,6,7,8};
cout<<"please input a number"<<endl;
cin>>n;
if (n==0)
cout<<"put a bigger number"<<endl;
for(int i=0;i<8;i++)
{
 rec[i]=false;
}
 rec[0]=true;
int t=0;
for(int i=0;i<8;i++)
{
if(rec[i])
continue;
n=n-a[i];
rec[i]=true;
b[t]=a[i];
t++;
if(!done(n))
continue;

else
finalarray(b,t);
}

system("pause");
return 0;
}