Solution 6

 

#include <iostream.h>

#include <stdlib.h>

 

int main()

{

      int a;

 

      do {

 

      cout << "Enter a value: ";

      cin >> a;

 

      } while (a<1);

 

      do {

 

      if (a%2==0)

 

       a=a/2;

 

      else

 

       a= a*3+1;

 

       cout << a << endl;

 

      } while (a>1);

 

      system("PAUSE");

      return 0;

}

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