void save(int m)
{
int i;
FILE*fp;
fp=fopen("clerk_list","w");
if ((fp=fopen("clerk_list","w"))==NULL)
{
printf ("打开失败\n");
exit(0);
}
for (i=0;i<m;i++)
if (fwrite(&em[i],sizeof(struct clerk),1,fp)!=1)
printf("文件读写错误\n");
fclose(fp);