密码

感觉这个挺有用的，存起来~

 

设计一口令检验程序，以检验该用户是否为合法用户。

 

 

 

#include <iostream.h>
#include <stdlib.h>

void main()
{
    char ch1,ch2,ch3,ch4,ch5,ch6,rh1,rh2,rh3,rh4,rh5,rh6;
    int j = 0;

    do
    {
        cout << "请输入自设密码：" << endl ;
         // cin.clear(); //清除错误标志位


        cin >> ch1 >> ch2 >> ch3 >> ch4 >> ch5 >> ch6;
        cout << endl ;

        cout << "请再次输入密码以校验：" << endl;
         // cin.clear(); //清除错误标志位


    cin >> rh1 >> rh2 >> rh3 >> rh4 >> rh5 >>rh6;

        if ( rh1 != ch1 || rh2 != ch2 || rh3 != ch3 || rh4 != ch4 || rh5 != ch5 || rh6 != ch6 )
            cout << "两次密码不一致，请再次输入" << endl;
        else
        {
            j = 1 ;
            break ;
        }

    }while ( !j );

    int i = 1;
    while ( i++ <= 3)
    {
        cout << "请输入密码" <<endl;
        cin >> ch1 >> ch2 >> ch3 >> ch4 >> ch5 >>ch6;
        cout << endl ;
    }

    if ( rh1 != ch1 || rh2 != ch2 || rh3 != ch3 || rh4 != ch4 || rh5 != ch5 || rh6 != ch6 )
    {
        if ( i < 4 )
            cout << "密码不正确，请在此输入：" << endl ;
        else
        {
                cout << "对不起，您三次没有输对密码" << endl ;
                exit ( 0 ) ;
        }
    }
    else
    {
            cout << "密码正确，请进入下一步操作" << endl ;
    }
}

怎么输入密码的时候怎么让它在屏幕上显示的是*而不是密码？以前做过，现在想不起来了……