#include <stdio.h>
main()
{ int  x,x1,x2,x3,x4;
  x=8;
  s1: x1=x-4;
  x2=x+4;
  x3=x/4;
  x4=x*4;
  if(x1+x2+x3+x4==100)
  printf("x1=%d,x2=%d,x3=%d,x4=%d\n",x1,x2,x3,x4);
  else
  {x=x+4;
  goto s1;}
}