第几天

柔情只为你懂 2022-11-07 05:56 254阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA0ODQ2Mw_size_16_color_FFFFFF_t_70][]

#include<stdio.h>
    int judge_year(int year)//判断是否为闰年
    {
        if(year%4==0&&year%100!=0||year%4==0&&year%400==0)
        {
            return 1;//是闰年
        }
        else
        {
            return 0;//不是闰年
        }
    }//是闰年, 返回1; 不是闰年, 返回0
    int judge(int year, int month, int day)//判断日期是否合法
    {
        if(year<0)
        {
            return -1;
        }
        else
        {
            if(judge_year(year)==1)//闰年
            {
                if((month==1||month==3||month==5||month==7||month==8||month==10||month==12)&&(day>31||day<1))
                {
                    return -1;
                }
                else if((month==4||month==6||month==9||month==11)&&(day>30||day<1))
                {
                    return -1;
                }
                else if(month==2&&(day>29||day<1))
                {
                    return -1;
                }
                else
                {
                    return 1;//日期合法
                }
            }
            else//不是闰年
            {
                if((month==1||month==3||month==5||month==7||month==8||month==10||month==12)&&(day>31||day<1))
                {
                    return -1;
                }
                else if((month==4||month==6||month==9||month==11)&&(day>30||day<1))
                {
                    return -1;
                }
                else if(month==2&&(day>28||day<1))
                {
                    return -1;
                }
                else
                {
                    return 1;//日期合法
                }
            }
        }
    }
    int Calculate(int year, int month, int day)//计算给定日期在当年的天数
    {
        int flag=judge_year(year);
        int temp;
        switch(month)
        {
            case 1: temp=day; break;
            case 2: temp=31+day; break;
            case 3: temp=59+day; break;
            case 4: temp=90+day; break;
            case 5: temp=120+day; break;
            case 6: temp=151+day; break;
            case 7: temp=181+day; break;
            case 8: temp=212+day; break;
            case 9: temp=243+day; break;
            case 10:temp=273+day; break;
            case 11:temp=304+day; break;
            case 12:temp=334+day; break;
        }
        if(flag==1&&month>=3)//天数+1
        {
            temp++;
        }
        return temp;
    }
    int main()
    {
        int year, month, day;
        scanf("%d%d%d", &year, &month, &day);
        if(judge(year, month, day)==-1)//年份不合法
        {
            printf("data error!\n");
        }
        else
        {
            printf("%d\n", Calculate(year, month, day));
        }
        return 0;
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA0ODQ2Mw_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA0ODQ2Mw_size_16_color_FFFFFF_t_70]: /images/20221023/851225abf2684d6fa9cd96b8f2c60c30.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA0ODQ2Mw_size_16_color_FFFFFF_t_70 1]: /images/20221023/72ca973682844434b0c54d2551f2b759.png