#include<stdio.h>

#include<string.h>

void validate_passwd(char *passwd)

{       

        char passwd_buf[11];

        unsigned char passwd_len =strlen(passwd);

        if(passwd_len>=4&&passwd_len<=8)

        {

                printf("goot!\n");

                strcpy(passwd_buf,passwd);

        }else{

                printf("bad!\n");

        }

}       

int main(int argc,char *argv[]){

        validate_passwd(argv[1]);

}