# include <stdio.h>
# include <stdlib.h>
# define MAXWORDS 4
struct information {
  char name[MAXWORDS];
  int sex;
  int years;
}human[10];
void inside_struct(struct information *p,int n);
void save_struct(char *fp,struct information *p,int n);
void outside_struct(struct information *p,int n);
void main()
{
  struct information *q=&human[0];
  //q=human;
  char name_file[20];
  inside_struct(q,10);
  outside_struct(q,10);
  printf("请输入您要保存的文件名\n");
  gets(name_file);
  save_sttruct(name_file,q,10);
  printf("保存完毕，下次见！\n");
}
void inside_struct(struct information *p,int n)
{
  int i;
  printf("请输入%d位人员的信息，\n包括姓名，性别（0为男，1为女），年龄\n中间用空格隔开\n",n);
  for(i=0;i<n;i++)
      scanf("%s%d%d",&((p+i)->name),&((p+i)->sex),&((p+i)->years));
}
void outside_struct(struct information *p,int n)
{
  int i=0;
  printf("您所输入的信息如下：\n");
  printf("姓名\t性别\t年龄\n");
  for(;i<n;i++)
  {
    printf("%s\t",(p+i)->name);
    if((p+i)->sex==0)
        printf("男\t");
    else
        printf("女\t");
    printf("%d",(p+i)->years);
    putchar("\n");
  }
}
void save_struct(char *fp,struct information *p,int n)
{
  int i=0;
  FILE *fpp;
  printf("let's save the information\n");
  if(fpp=fopen(fp,"w")==NULL)
      printf("can't open the file\n");
  for(;i<n;i++)
      fprintf(*fp,"%s\t%d\t%d\t",(p+i)->name,(p+i)->sex,(p+i)->years);
  printf("保存完毕，您可以打开查看");
}

单词拼错了
save_sttruct(name_file,q,10);