C++输入密码掩码

在windows下

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

#define length  6

int main()
{
    char* password = NULL;
    password = (char*)malloc(sizeof(char)*(length + 1));
    char* p = NULL;
    int count = 0;
    p = password;

    printf("Please input a six digit password:\n");

    for (count = 0; count < length; count++)
    {
        *p = getch();
        fflush(stdin);
        p++;
    }
    password[6] = {'\0'};

    printf("Do you want to display the password?\ntrue(1)  false(2)\n");
    int select = 0;
    scanf("%d", &select);
    switch (select)
    {
        case 1:
        {
            printf("password is %s\n", password);
            break;
        }
        case 2:
            break;
    }
    free(password);
    system("pause");
    return 0;
}

在Linux下是没有conio.h这个头文件的所以

#include<iostream>
using namespace std;

#define length  4

int main() 
{
    char* password;
    password= new char[length + 1];
    char* p = NULL;
    int count = 0;
    cout << "Input password : "<<endl;
    p = password;
    count = 0;
    system("stty -echo");
    for (count = 0; count < length; count++)
    {
        *p = getchar();
        fflush(stdin);
        p++;
    }

    cout<<endl;
    password[count] = '\0';

    cout << "The password is " << password <<endl;
    delete password;
    system("stty echo");
    return 0;
}