刚编了一个下面的东东
可是运行有问题,可我找不出问题在那里,请高手指教,小虾感激不尽呀!!!
#include <stdio.h>
#include <stdlib.h>
struct item
{
 int code;
 char name;
 int target;
 int sold;
}iarray[50];
struct sales
{
 int code;
 int quantity;
}sarray[50];
void main()
{
 FILE *f1,*f2;
 int i=1;
 char flag='y';
 if((f1=fopen("good.txt","wb+"))==NULL)
 {
  printf("can not open the file good.txt\n");
  exit(1);
 }
 if((f2=fopen("sale.txt","wb+"))==NULL)
 {
  printf("can not open the file sale.txt\n");
  exit(1);
 }
 
  system("cls");
  printf("**********ADD NEW ITEM DETAILS***********\n");
  printf("\n");
  printf("\n");
  fseek(f1,0,0);
     while(feof(f1)!=1)
  {
   fread(&iarray[i],sizeof(struct item),1,f1);
   i++;
  }
  iarray[i].code=i;
        printf("Item code:%d\n",iarray[i].code);
  printf("Enter item name<up to 20 chars.>:");
  scanf("%c",&iarray[i].name);
  printf("\nEnter target sales:");
  scanf("%d",&iarray[i].target);
  fseek(f1,(i-1)*sizeof(struct item),0);
  fseek(f2,(i-1)*sizeof(struct sales),0);
        sarray[i].code=iarray[i].code;
  if(fwrite(&iarray[i],sizeof(struct item),1,f1)==1&&fwrite(&sarray[i],sizeof(struct sales),1,f2)==1)
   printf("\nRecord write to item file\n");
  fclose(f1);
  fclose(f2);
}