Question

c++问题,帮我看看哪错了

#include <stdio.h>
#include <conio.h>
#include <iostream.h>
#include <string>
using namespace std;

class manager
{
string ID;
string password;
string popedom;
string passwords;//second
public:
inline bool manager::Changepassword()
{
int i;
cout<<"输入新密码，按回车结束：(1--10个字符)\n";
cout<<"Input the new password,end with 'enter'\n";
for (i=0;i<password.size();i++)
{
password[i]=getch();
cout<<"*";
if (password[i]=='\r'&&i>0&&i<10)
break;
else cout<<"error!Out of Rang(1--10)";
}
password[i]='\0';
passwords=password;
return true;}

inline bool manager::Makesurepassword()
{
cout<<"\n再次输入确认密码：\n";
cout<<"\nmake sure the changes:\n";
do
{
for (int i=0;i<passwords.size();i++)
{
password[i]=getch();
cout<<"*";
if (password[i]=='\r')
break;
}
password[i]='\0';
if (password.compare(passwords)==0)
{cout<<"\nPassword is OK!\n";
break;}
else
if (password.compare("quit\r")==0) break;
else
cout<<"\n密码检验错误，输入quit退出\n";
cout<<"\nwrong!enter 'quit' to exit." ;
}
while (1);

return true;

} //make sure the password
};

void main()
{manager A;
A.Changepassword();
A.Makesurepassword();

}

Answer 1

inline bool manager::Changepassword()
{
int i;
cout<<"输入新密码，按回车结束：(1--10个字符)\n";
cout<<"Input the new password,end with 'enter'\n";
for (i=0;i<password.size();i++) /*password为空，.size() = 0,不会循环耶*/
{
password[i]=getch();
cout<<"*";
if (password[i]=='\r'&&i>0&&i<10)
break;
else cout<<"error!Out of Rang(1--10)";
}
password[i]='\0';
/*这里，string类型的
password还是空的啊，必须对它初始化，如password="1234567890"
*/
passwords=password;
return true;}

//////////////////////////////
还有一个问题是，cout是带输入缓冲的，最好在未尾加个endl将缓冲区清空，或者用fflush(stdin),你再改改吧。
请参考这个
http://www.programfan.com/club/old_showbbs.asp?id=128732

inline bool manager::Changepassword()
{
password="1234567890";
int i;
cout<<"输入新密码，按回车结束：(1--10个字符)"<<endl;
cout<<"Input the new password,end with 'enter'"<<endl;
// printf("Input the new password,end with 'enter'\n");
for (i=0;i<password.size();i++)
{
password[i]=getch();
cout<<"*";
fflush(stdin);
// printf("*");
if (password[i]=='\r'&&i>0&&i<10)
break;
else
cout<<"error!Out of Rang(1--10)"<<endl;
}
password[i]='\0';
passwords=password;
return true;}