第一个是天数转换:
#include<stdio.h>
int main()
{
unsigned short date = 0, week = 0, day = 0;
printf("请输入天数\n");
scanf_s("%hd", &date);
week = date / 7;
day = date % 7;
printf("%hd days are %hd weeks,%hd days", date, week, day);
return 0;
}
然后是密码输入:
#include<conio.h>
#include<stdio.h>
int main()
{
char a= 0, b = 0, c = 0;
printf("\t\t欢迎使用本系统\n");
printf("\t用户名:\n");
printf("\t密码:");
a=_getch();
_putch('*');
b = _getch();
_putch('*');
c = _getch();
_putch('*');
scanf_s("%s%s%s", &a, &b, &c);
return 0;
}