为什么每次输入还没到5次，它就中止了，到底什么原因，希望各位大神能帮帮忙
#include<iostream>
#include<string>
using namespace std;

int cleckuserinfo(string name,string pwd,int name_len,int pwd_len )
{
int i;
for(i=0;i<name_len;i++)
{
if((name.at(i)=='#')||(name.at(i)=='*')||(name.at(i)=='!'))
{
return 1;

}
}
for(i=0;i<pwd_len;i++)
{
if((pwd.at(i)=='#')||(pwd.at(i)=='*')||(pwd.at(i)=='!'))
{
return 1;

}
}

if((name_len<8)||(name_len>64))
{
return 2;
}

if((pwd_len<8)||(pwd_len>64))
{
return 2;
}

return 0;
}


void errorinfo(int n)
{
if (n==1)
{
cout<<"您输入的用户名或密码含有非法字符#或*或！"<<endl;
}
if (n==2)
{
cout<<"用户名，密码不得少于8个字符，不得多于64个字符！"<<endl;
}

}

void connect(string name,string pwd,int name_len,int pwd_len)
{
string str = "#";
string str1 = name + str + pwd;
cout<<"连接后的新字符串为："<<str1<<endl;

//从新字符串中提取子串
int m = str1.find(str,0);
string str2,str3;

str2.assign( str1, 0, name_len );

str3.assign( str1, m+1, pwd_len );

if(name_len<=32)
{
str2.append(32-name_len,'*');
}


if(pwd_len<=32)
{
str3.append(32-pwd_len,'*');
}

cout<<"#字符的位置是"<<m<<endl;
cout<<"子串为："<<endl<<str2<<endl<<str3<<endl;


}

int main (void)
{
cout<<"*********************WELCOME TO THE USER LANDING PLATFORM*********************"<<endl;

string username;
string userpwd ;


cout<<"请输入用户名:"<<endl;
cin>>username;


cout<<"请输入用户密码:"<<endl;
cin>>userpwd;

int namelen=username.length();
int pwdlen =userpwd.length();
int num=1;

int flag=cleckuserinfo(username,userpwd,namelen,pwdlen);


while((flag != 0)&&(num<5))
{
errorinfo(flag);

cout<<"请输入用户名:"<<endl;
cin>>username;


cout<<"请输入用户密码:"<<endl;
cin>>userpwd;


flag=cleckuserinfo(username,userpwd,namelen,pwdlen);


num++;
cout<<"您还有的输入机会为："<<5-num<<endl;
}

connect(username,userpwd,namelen,pwdlen);

if(flag==0)
{
cout<<"用户登录成功，请稍等"<<endl;

}

else
{

cout<<"非法输入达到5次，程序终止!"<<endl;
}


return 0;
}
[解决办法]
while((flag != 0)&&(num<=5))
[解决办法]
你输入的值 是什么 我这边可以啊
[解决办法]

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

//---------------------------------------------------------------------------

#pragma argsused
#include<iostream>
#include<string>
using namespace std;

//检查
//如果含特殊字符 1
//长度错误 2
int cleckuserinfo(string name,string pwd,int name_len,int pwd_len  )
{
        int i;
        for(i=0;i<name_len;i++)
        {
                if((name.at(i)=='#')
[解决办法]
(name.at(i)=='*')
[解决办法]
(name.at(i)=='!'))
                {
                        return 1;

                }
        }
        for(i=0;i<pwd_len;i++)
        {
                if((pwd.at(i)=='#')
[解决办法]
(pwd.at(i)=='*')
[解决办法]
(pwd.at(i)=='!'))
                {
                        return 1; 
 
                }
        }

        if((name_len<8)
[解决办法]
(name_len>64))
        {
                return 2;
        }

        if((pwd_len<8)
[解决办法]
(pwd_len>64))
        {
                return 2;
        }

        return 0;
}

//显示错误信息
void errorinfo(int n)
{
        if (n==1)
        {
                cout<<"您输入的用户名或密码含有非法字符#或*或！"<<endl;
        }
        if (n==2)
        {
                cout<<"用户名，密码不得少于8个字符，不得多于64个字符！"<<endl;
        }

}

//连接
void connect(string name,string pwd,int name_len,int pwd_len)
{
        string str = "#";
        string str1 = name + str + pwd;
        cout<<"连接后的新字符串为："<<str1<<endl;

        //从新字符串中提取子串
        int m = str1.find(str,0);
        string str2,str3;

        str2.assign( str1, 0, name_len );

        str3.assign( str1, m+1, pwd_len );

        if(name_len<=32)
        {
                str2.append(32-name_len,'*');
        }


        if(pwd_len<=32)
        {
                str3.append(32-pwd_len,'*');
        }

        cout<<"#字符的位置是"<<m<<endl;
        cout<<"子串为："<<endl<<str2<<endl<<str3<<endl;
}

int main (void)
{
        cout<<"*********************WELCOME TO THE USER LANDING PLATFORM*********************"<<endl;
        cout<<"共有5次机会"<<endl;
        cout<<"******************************************************************************"<<endl;
        string username("");
        string userpwd("");




        int namelen;
        int pwdlen;
        int num=1;

        int flag;
        int MAX = 6;

        while(num<MAX)
        {


                cout<<"请输入用户名:"<<endl;
                cin>>username;


                cout<<"请输入用户密码:"<<endl;
                cin>>userpwd;

                namelen=username.length();
                pwdlen =userpwd.length();

                flag=cleckuserinfo(username,userpwd,namelen,pwdlen);
                if(flag == 0)
                {
                        break;
                } 
 

                errorinfo(flag);
                num++;
                cout<<"您还有的输入机会为："<<MAX-num<<endl;
        }



        if(flag==0)
        {
                cout<<"用户登录成功，请稍等"<<endl;
                connect(username,userpwd,namelen,pwdlen);
        }
        else
        {

                cout<<"非法输入达到5次，程序终止!"<<endl;
        }
        system("pause");
        return 0;

}

[解决办法]
flag=cleckuserinfo(username,userpwd,namelen,pwdlen);

循环中后面这两个参数没有赋值