用C语言编写:输入某年某月某日,判断这一天是这一年的第几天?答:main(){ int n,year,month,day,month_day_sum=0,sum,month_day[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};printf("please input the \"year month day\"\n");scanf("%d%d%d",&year,&month,&day);if(year%100!=0&&year%4==0||year%400) month_day[2]=29;if(day>...
c语言输入某年某月某日,求下一天的日期?答:include <stdio.h> int main(){ int year1,month1,day1,year2,month2,day2;int day[12] = {31,28,31,30,31,30,31,31,30,31,30,31};printf("Please input year-month-day : ",year1,month1,day1);scanf("%d-%d-%d",&year1,&month1,&day1);if((year1 % 400 == 0) |...