本文主要是介绍计算该日在本年中是第几天?注意瑞年问题。(分别用结构体变量和函数实现),希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
1:用结构体实现
#include <stdio.h>
struct year_month_day
{int year;int month;int day;
}data;
void main()
{int day_tab[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};int i,days=0;printf("input year,month,day:\n");scanf("%d,%d,%d",&data.year,&data.month,&data.day);for(i=1;i<data.month;i++){days=days+day_tab[i];}days=days+data.day;if((data.year%4==0 && data.year%100!=0) || (data.year%400==0)){if(data.month>3){days=days+1;}}printf("%d/%d is the %dth day in %d.\n",data.month,data.day,days,data.year);
}
2:用函数实现
#include <stdio.h>
int sum_days(int month,int day)
{int sumdays=0;int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};for(int i=0;i<month;i++){sumdays=sumdays+a[i];}sumdays=sumdays+day;return sumdays;
}
bool fun(int year)
{if(year%4==0&&year%100!=0 ||year%400==0){return true;}else{return false;}
}
void main()
{int year,month,day,sumdays;printf("请输入年、月、日:\n");scanf("%d,%d,%d",&year,&month,&day);if(fun(year)&&month>=3){day=day+1;}sumdays=sum_days(month,day);printf("%dth day of this year\n",sumdays);
}
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