Задание было, написать БД по билетам вокзала

if(Train.Nomer==0) break;

struct Ticket{  
   int Nomer;  
   char Nameoftrain[10];  
   char Endstation[10];  
   int Freeplace;  
   float Price;  
   char Servicetype[10];  
   float Starttime;  
   float Goingtime;  
   };  
  
   int Output(FILE*fPtr)  
  { struct Ticket Train={0,"","",0,0.0,"",0.0,0.0};  
     int i=0;  
     printf("%-6s%-13s%-13s%-10s%-6s%-13s%-10s%-5s\n",  
            "Nomer","Nameoftrain","Endstation","Freeplace","Pr  ice","Servicetype","Starttime","Goingtime");  
     while(Train.Nomer!=-1) {  
         fseek(fPtr,(i++)*sizeof(struct Ticket),SEEK_SET);  
         fread(&Train,sizeof(struct Ticket),1,fPtr);  
         if(Train.Nomer==0) break;  
         if(Train.Nomer!=-1)  
         printf("%-6d%-13s%-13s%-10d%-6.1f%-13s%-10.2f%-5.2f\n", Train.Nomer,  
            Train.Nameoftrain,Train.Endstation,Train.Freeplace  ,Train.Price,  
             Train.Servicetype,Train.Starttime,Train.Goingtime)  ;  
    }  
    return i;  
  }  
 
void Buying(FILE*fPtr)  
{  
 int i=0;  
int j=-1;  
 char Nameoftrain[10];  
 struct Ticket Train={0,"","",0,0.0,"",0.0,0.0};  
 printf("Input Trains Name:");  
 scanf("%s",Nameoftrain);  
 while(Train.Nomer!=-1) {  
     fseek(fPtr,(i)*sizeof(struct Ticket),SEEK_SET);  
      fread(&Train,sizeof(struct Ticket),1,fPtr);  
       if(Train.Nomer!=-1)  
      if(strcmp(Train.Nameoftrain,Nameoftrain)==0)  
      j=i;  
         i++;  
 }  
 if(j!=-1)  
 fseek(fPtr,(j)*sizeof(struct Ticket),SEEK_SET);  
 Train.Freeplace=Train.Freeplace-1;  
 fwrite(&Train,(j)*sizeof(struct Ticket),1,fPtr);  
 }