Use two out parameters : Out : Language Basics C# Examples

    
using  System;  
  
class  Num  {  
      
    public  bool  hasComFactor(int  x,  int  y,out  int  least,  out  int  greatest)  {  
        least  =  1;  
        greatest  =  1;    
  
        if(least  !=  1)  
              return  true;  
        else  
              return  false;  
    }  
}  
    
class  MainClass  {  
    public  static  void  Main()  {      
        Num  ob  =  new  Num();  
        int  lcf,  gcf;  
  
        if(ob.hasComFactor(231,  105,  out  lcf,  out  gcf))  {  
            Console.WriteLine("Lcf  of  231  and  105  is  "  +  lcf);  
            Console.WriteLine("Gcf  of  231  and  105  is  "  +  gcf);  
        }  
        else  
            Console.WriteLine("No  common  factor  for  35  and  49.");  
  
        if(ob.hasComFactor(35,  51,  out  lcf,  out  gcf))  {  
            Console.WriteLine("Lcf  of  35  and  51  "  +  lcf);  
            Console.WriteLine("Gcf  of  35  and  51  is  "  +  gcf);  
        }  
        else  
            Console.WriteLine("No  common  factor  for  35  and  51.");  
  
    }  
}