为什么一直是WA啊，我的结果都对啊。难道是输出格式错误？
CODE:

#include<stdio.h>
#include<stdlib.h>
main()
{
      double a,b,c,d,i,j,k,s,x;
      int l;
      scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
      while(a!=0||b!=0||c!=0||d!=0)
      {
                                   
                              
                         i=a*c*4.19,j=b*(0-d)*2.09,x=a*355,k=355*b;
                         if(i>j+k) l=1;
                         else {
                              if (i+x<j) l=-1;
                              else l=0;}
                              switch (l)
                              {         
                                       case 1: {s=(4.19*a*c+2.09*b*d-335*b)/(4.19*b+4.19*a);
                                       printf("0.0 g of ice and %.1lf g of water at %.1lf C\n",a+b,s);break;}
                                       case 0:{s=(4.19*a*c-2.09*b*(0-d))/335;
                                             printf("%.1lf g of ice and %.1lf g of water at 0.0 C\n",b-s,a+s);break;}
                                       case -1:{s=(2.09*b*d+335*a+4.19*a*c)/(2.09*a+2.09*b);
                                       printf("%.1lf g of ice and 0.0 g of water at %.1lf\n",a+b,s);}
                                       }
                                       scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
                                    
                                       
                                       }
                                       }