程序代码：

#include <stdio.h>
#define ESC 27
 struct diary                                  /*定义一个结构变量*/
      {
       char name[8],weather[10],content[100];
       struct
           {
           int month;
           int day;
           int year;
           }data;
      }

 main()
{int i=0;
 
 struct diary user[10];

 do
 {
  FILE *fp;
  fp=fopen("diary.txt","w+"); /*创建一个文件只写*/
  printf("\nplease input your name:");
  scanf("%s", user[i].name); /*输入姓名*/
  printf("please input the data:");/*出入日期*/
  scanf("%d%d%d",&user[i].data.month,&user[i].data.day,&user[i].data.year);
  printf("please input the weather:");
  scanf("%s",user[i].weather);
  printf("please input content:");
  scanf("%s",user[i].content);
  fprintf(fp,"Name : %s Data : %2d-%2d-%2d Weather : %s\nContent:\n%5s\n", user[i].name,user[i].data.month,user[i].data.day,user[i].data.year, user[i].weather, user[i].content); /*结果写入文件*/
  fclose(fp);
  i++;
 }while(getch()!=ESC);
}程序如上：创建一个TXT文件将内容写进去，当我用do while 循环再次写入内容 结果是写进去了但是覆盖了原先写的内容，求高手帮忙改下 谢谢了！！