i have a problem like this

10 20 30 40 70

20 30 70

30 40 10 20

29 70

80 90 20 30 40

40 45 65 10 20 80

45 65 20

I want to remove all subset transaction from this file.

output file should be like follows

10 20 30 40 70

29 70

80 90 20 30 40

40 45 65 10 20 80

Where records like

20 30 70

30 40 10 20

45 65 20

are removed because of they are subset of other records. i AM using set for this but i am not able to create one set for one line can anybody know how to do this please help me here i am sending you my code

include

include

include

using namespace std;

using namespace std;

set s1;

int main()

{

FILE fp = fopen ( "abc.txt", "r" ); if ( fp != NULL ) { char line [ 128 ]; / or other suitable maximum line size */

  while ( fgets ( line, sizeof line, fp ) != NULL ) /* read a line */
  {
        istringstream iss(line); 

do 
{ 
    string sub; 
    iss >> sub; 
    s1.insert(sub);

} while (iss); 
 for (set<string>::const_iterator p = s1.begin( );p != s1.end( ); ++p)
  cout << *p << endl;
  }
  }
  }