判断年龄，星座， 属相

KnowFromBirth.cpp

#include<stdio.h>

char *sign[] = {     // 星座
  "白羊座",
  "金牛座",
  "双子座",
  "巨蟹座",
  "狮子座",
  "处女座",
  "天秤座",
  "天蝎座",
  "射手座",
  "摩羯座",
  "水瓶座",
  "双鱼座"
};

char *animal[] = {    // 属相
  "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"
};

/*
 * 判断某个日期是否在一个区间内
 * @month,day 待判断的日期
 * @month_down, day_down 日期区间的下界
 * @month_up, day_up 日期区间的上界
 */
bool betweenTwoDate(int month, int day, int month_down, int day_down, int month_up, int day_up) {
  if(month_up == month_down) {
    if(month == month_up && day >= day_down && day <= day_up)
      return true;
    else
      return false;
  } else {
    if(month > month_down && month < month_up)
      return true;
    else if(month == month_down && day >= day_down)
      return true;
    else if(month == month_up && day <= day_up)
      return true;
    else
      return false;
  }
}

/*
 * 根据出生月日判断星座
 * @month 出生月
 * @day 出生日
 */
char *getSign(int month, int day) {
  if(betweenTwoDate(month, day, 3, 21, 4, 20))
    return sign[0];
  else if(betweenTwoDate(month, day, 4, 21, 5, 20))
    return sign[1];
  else if(betweenTwoDate(month, day, 5, 21, 6, 21))
    return sign[2];
  else if(betweenTwoDate(month, day, 6, 22, 7, 22))
    return sign[3];
  else if(betweenTwoDate(month, day, 7, 23, 8, 22))
    return sign[4];
  else if(betweenTwoDate(month, day, 8, 23, 9, 22))
    return sign[5];
  else if(betweenTwoDate(month, day, 9, 23, 10, 22))
    return sign[6];
  else if(betweenTwoDate(month, day, 10, 23, 11, 21))
    return sign[7];
  else if(betweenTwoDate(month, day, 11, 22, 12, 21))
    return sign[8];
  else if(betweenTwoDate(month, day, 12, 22, 1, 19))
    return sign[9];
  else if(betweenTwoDate(month, day, 1, 20, 2, 18))
    return sign[10];
  else if(betweenTwoDate(month, day, 2, 19, 3, 20))
    return sign[11];
}

/*
 * 根据出生年判断属相
 * @year 出生年
 */
char *getAnimal(int year) {
  return animal[(year - 1900) % 12];
}

int main() {
  int birth_year, birth_month, birth_day;   // 出生年月日
  int now_year, now_month, now_day;  // 现在年月日

  printf("请输入出生年月日:\n");
  scanf("%d %d %d", &birth_year, &birth_month, &birth_day);

  printf("输入现在年月日:\n");
  scanf("%d %d %d", &now_year, &now_month, &now_day);

  int age = now_year - birth_year;  // 计算年龄
  if(betweenTwoDate(now_month, now_day, 1, 1, birth_month, birth_day))  // 如果未到生日
    age -= 1;       // 减一岁

  printf("年龄：%d\n", age);
  printf("星座：%s\n", getSign(birth_month, birth_day));
  printf("属相：%s\n", getAnimal(birth_year));
  return 0;
}