#include <stdio.h>
#include "filesys.h"

void regist(int id)
{
char tempname[FILENAMELEN];
char temp[FILENAMELEN];
char temppassword[FILENAMELEN];
int i;

printf("---------regist---------\n");
if ( strcmp(user[id].u_name, "root") ) {
    printf("You can't regist a new user!\n");
    return;
}    

for (i = 0; i < USERNUM; ++i) {
    if ( !strcmp(user[i].u_name, "") && !user[i].u_gid && !user[i].u_gid ){    
        printf("Please input your user name(Max 11 characters):");
        scanf("%s",tempname);
        printf("Please input your password(Max ll characters):"); 
        scanf("%s",temp);
        printf("'Please input your password again：");
        scanf("%s",temppassword);
        if(strcmp(temppassword,temp)==0)
        {
                printf("OK!You have register !You can login your accounts./n");
                strcpy(user[i].u_name,tempname);
                strcpy(user[i].password,temppassword);
                user[i].u_uid = ( temppassword[0]*34 + tempname[0]*12 ) % 2000;
                user[i].u_gid = 0;
                fseek(fd,DATASTART+2*BLOCKSIZ,SEEK_SET);
                fwrite(user,1,BLOCKSIZ,fd);
                break;
        }
        else
        {
                printf("Sorry!Password incorrect-You can’t login/n");
        }       
    }
}       
if (i>=8)
{
printf("Registered user has already fulld./n");
}
return;
}