check this out..
#include<iostream>
#include<stdlib.h>
using namespace std;
void print_sets(string *s,int pos,int n,char *to_print)
{
if(pos==n)
{
return;
}
for(int i=0;i<s[pos].length();i++)
{
to_print[pos] = s[pos][i];
print_sets(s,pos+1,n,to_print);
if(pos==n-1)
{
for(int j=0;j<n;j++)cout<<to_print[j];
cout<<endl;
}
}
return;
}
int main()
{
int n;
cin>>n;
string s[n];
for(int i=0;i<n;i++)
{
cin>>s[i];
}
char *to_print = new char[n];
print_sets(s,0,n,to_print);
}
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