#include <stdio.h>
void  max2( int x1,  int x2  ,int  x3,  int  *y1 ,int  *y2)
    {   if (x1>=x2  && x1>=x3)
                            {   *y1=x1;
                                   if(x2>=x3)     *y2=x2;
                                   else   *y2=x3;
                             }
                      if(x1>=x2 && x1< x3)
                             {   *y1=x3;
                                   if(x1>=x2)  *y2=x1;
                                   else  *y2=x2;
                              }
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