#include<stdio.h>
#include<string.h>
#include<conio.h>

void main()
{
//char name代表用户名 mm代表登陆密码 a代表输入的密码
    char name[20], mm[3]={'y','a','n'},a[6];
    int i,g;

    printf("\n\n\n\t\t\tStudent Manager");
    for(i=0;i<3;i++)
{    printf("\n\n\t\tUser Name:");
    scanf("%s",&name);

    if(strcmp(name,"grace")==0)
    { printf("\t\tPlease input your password:");
for(g=0;g<6;g++)

   {
        a[g] = getch();  /*逐次赋值,但不回显*/
        if (a[g] == '\x0d')/*回车则终止循环*/
        {
   a[g]='\0';
            break;
        }
        printf("*");       /*以星号代替字符个数*/
    }
    break;}
else
{
    printf("\t\tThe wrong user");
   
}
}
   
   











}