![](https://csdnimg.cn/release/download_crawler_static/87652047/bg5.jpg)
llw.open("f:\\user.txt",ios::app);
if(find(username)==1)
{
cout<<"用户名已存在"<<endl;
exit(-1);
}
else
{
llw.write(username,strlen(username));
llw.put(' ');
llw.write(password,strlen(password));
llw.put('\n');
system("cls");
cout<<"\n\n\t\t\t\t 注册成功!"<<endl;
}
}
char user::custom()
{
char A[10];
char b;char i;
int k=0;
system("cls");
cout<<"\n \n"
<<"\t\t#####################################\n"
<<"\t\t# 学习方式: #\n"
<<"\t\t# 1.单词操作 #\n"
<<"\t\t# 2.单词游戏 #\n"
<<"\t\t# 0.退出系统 #\n"
<<"\t\t#####################################\n"<<endl;
while(1)
{
cout<<"\t\t 请选择学习方式:";
cin>>A;
if(strlen(A)==1)
{
for(i='0';i<='2';i++)
{
b=i;
if(b==A[0])
return b;
}
//主菜单界面