【经典100题】题目4 年月日判断是年份的第几天

灰太狼 2022-04-13 07:44 234阅读 0赞

题目

输入某年某月某日，判断这一天是这一年的第几天？

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# c语言实现 #

#include "stdio.h"
    #include "conio.h"
    
    void main()
    {
    	int day, month, year, sum, leap;	
    	printf("请输入年：");
    	scanf("%d", &year);
    	printf("请输入月：");
    	scanf("%d", &month);
    	printf("请输入日: ");
    	scanf("%d", &day);
    	switch (month) /*先计算某月以前月份的总天数*/
    	{
    	case 1:sum = 0;    break;
    	case 2:sum = 31;   break;
    	case 3:sum = 59;   break;
    	case 4:sum = 90;   break;
    	case 5:sum = 120;  break;
    	case 6:sum = 151;  break;
    	case 7:sum = 181;  break;
    	case 8:sum = 212;  break;
    	case 9:sum = 243;  break;
    	case 10:sum = 273; break;
    	case 11:sum = 304; break;
    	case 12:sum = 334; break;
    	default:printf("data error"); break;
    	}
    	sum = sum + day; /*再加上某天的天数*/
    	if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) /*判断是不是闰年*/
    		leap = 1;
    	else
    		leap = 0;
    	if (leap == 1 && month>2) /*如果是闰年且月份大于 2,总天数应该加一天*/
    		sum++;
    	printf("这是当年的第%d天.", sum);
    	getch();
    }

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# Python语言实现 #

import math
    
    #判断是平年还是闰年
    def isLeapYear(year):
        result1 = year / 100
        result2 = year / 4
        result3 = year / 400
        if math.floor(result1) == result1: 
            if math.floor(result3) == result3:
                return 1
            else:
                return 0
        else:
            if math.floor(result2) == result2:
                return 1
            else:
                return 0
    
    #如果是一月
    def count1month(day):
        return day;
    #如果是二月
    def count2month(day):
        return 31+day;
    #如果是3月
    def count3month(day):
        return 59+day;
    #如果是4月
    def count4month(day):
        return 90+day;
    #如果是5月
    def count5month(day):
        return 120+day;
    #如果是6月
    def count6month(day):
        return 151+day;
    #如果是7月
    def count7month(day):
        return 181+day;
    #如果是8月
    def count8month(day):
        return 212+day;
    #如果是9月
    def count9month(day):
        return 243+day;
    #如果是10月
    def count10month(day):
        return 273+day;
    #如果是11月
    def count11month(day):
        return 304+day;
    #如果是12月
    def count12month(d):
        return 334+d;
    #判断用户是否输入正确
    def correctinput():
        if isLeapYear(year) == 1:
            print("当年是闰年")
            if month == 1:
                print("这是当年的第:",count1month(day),"天")
            if month == 2:
                print("这是当年的第:",count2month(day),"天")
            if month == 3:
                print("这是当年的第:",count3month(day)+1,"天")
            if month == 4:
                print("这是当年的第:",count4month(day)+1,"天")
            if month == 5:
                print("这是当年的第:",count5month(day)+1,"天")
            if month == 6:
                print("这是当年的第:",count6month(day)+1,"天")
            if month == 7:
                print("这是当年的第:",count7month(day)+1,"天")
            if month == 8:
                print("这是当年的第:",count8month(day)+1,"天")
            if month == 9:
                print("这是当年的第:",count9month(day)+1,"天")
            if month == 10:
                print("这是当年的第:",count10month(day)+1,"天")
            if month == 11:
                print("这是当年的第:",count11month(day)+1,"天")
            if month == 12:
                print("这是当年的第:",count12month(day)+1,"天")
            
        else:
            print("当年是平年")
            if month == 2 and day == 29:
                print("当年是平年，没有2月29日，输入错误！")#提示错误信息
            else:   
                if month == 1:
                    print("这是当年的第:",count1month(day),"天")
                if month == 2:
                    print("这是当年的第:",count2month(day),"天")
                if month == 3:
                    print("这是当年的第:",count3month(day),"天")
                if month == 4:
                    print("这是当年的第:",count4month(day),"天")
                if month == 5:
                    print("这是当年的第:",count5month(day),"天")
                if month == 6:
                    print("这是当年的第:",count6month(day),"天")
                if month == 7:
                    print("这是当年的第:",count7month(day),"天")
                if month == 8:
                    print("这是当年的第:",count8month(day),"天")
                if month == 9:
                    print("这是当年的第:",count9month(day),"天")
                if month == 10:
                    print("这是当年的第:",count10month(day),"天")
                if month == 11:
                    print("这是当年的第:",count11month(day),"天")
                if month == 12:
                    print("这是当年的第:",count12month(day),"天")
                   
    try:
        #提示用户输入年月日
        year = int(input("请输入年："))
        month = int(input("请输入月："))
        day = int(input("请输入日："))
    
        if month>12 or month <1 or day >31 or day<0 or year<0:
            print("输入信息有误，请重新输入！")
        else:
            correctinput()
    
    except:
        print("输入错误!")

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★finished by songpl,2018.11.28