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最新推荐文章于 2025-09-05 13:07:01 发布

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#date #input #struct #日历 #sun

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本文介绍了一个用于C语言的日期处理模块，包括日期输入验证、日期比较、计算两个日期之间的天数差等功能，并提供了完整的代码实现。

包含三文件w.c, date.h, date.c。其中w文件为主文件

w.c文件内容，包含date.h

#include "date.h"

void main()
{
	Date  date;
	int  choose;
	Input(&date);	
	Show(&date,&choose); 
}

date.h声明函数

/* 定义日期 */
typedef struct data 
{
	int year;
	int month;
	int day;
}Date; 
int isr(int);                       /* 判断是否是闰年 */
int input(Date * );                 /* 输入 */
int month_day(Date *);              /* 确定每月的天数 */
int Isbig(Date * ,Date * );         /* 比较两个日期的大小 */  
int returnday(Date * , Date * );    /* 算两个日期的天数差 */
void returnweek(Date * );           /* 算星期几 */
void calader(Date *);               /* 日历 */
void show(Date *,int * );                  /* 显示 */

date.c 其中写的是.h文件中函数的实现以及封装其他需要调用但不用主函数调用的子函数

#include "date.h"
int isr(Date * date)
{
	int isR=0;
	int year = date->year;
	if(((date->year%4==0)&&(date->year%100!=0))||(date->year%400==0))
	{
		isR=1;
	}
	else
	{
		isR=0;
	}
	return isR;
}
int input(Date * date)
{
	int _day;
	int isok=0;
	if((date->month>12)||(date->month<1))
	{
		isok=1;
	}
	else
	{
		_day=month_day(date);
		if((date->day<1)||(date->day>_day))
		{
			isok=1;
		}
	}
	return isok;
}
void Input(Date * date)
{
	
	int IsOK = 0;
	printf("Please input the first date:");
	scanf("%d %d %d",&date->year,&date->month,&date->day);
	IsOK = input(date);
	while(IsOK)
	{
		printf("It is a error day,please input again:");
		scanf("%d %d %d",&date->year,&date->month,&date->day);
		IsOK=input(date);
	}
}
int month_day(Date *date)
{
	int isR=isr(date);
	int day=0;
	if((date->month==1)||(date->month==3)||(date->month==5)||(date->month==7)||(date->month==8)||(date->month==10)||(date->month==12))
	{
		day=31;
	}
	else
	{
		if(date->month==2)
		{
			if(isR)
			{
				day=29;
			}
			else
			{
				day=28;
			}
		}
		else
		{
			day=30;
		}
	}
	return day;
}
int Isbig(Date * date1,Date * date2)
{
	int isbig=0;
	if((date1->year) < (date2->year))
	{
		isbig=1;
	}
	else
	{
		if(date1->month < date2->month)
		{
			isbig=1;
		}
		else
		{
			if(date1->day < date2->day)
			{
				isbig=1;
			}
		}
	}
	return isbig;
}
void swap(Date * date1,Date * date2)
{
	int year,month,day;
	year = date1->year;
	month = date1->month;
	day = date1->day;
	date1->year = date2->year;
	date1->month = date2->month;
	date1->day = date2->day;
	date2->year = year;
	date2->month = month;
	date2->day = day;
	
	
}
int returnday(Date * date1, Date * date2)
{
	Date  temp;
	int isR=0;
	int date=0;
	int i,j,isbig=0;
	int year,month,day;
	/*	if(year1<year2)
	{
	isbig=1;
	}
	else
	{
	if(month1<month2)
	{
	isbig=1;
	}
	else
	{
	if(day1<day2)
	{
				isbig=1;
				}
				}
				}
	*/
	isbig=Isbig(date1,date2);
	if(isbig)
	{
		swap(date1,date2);
	}
	if(date1->year > date2->year)
	{
		for(i = date2->year + 1;i < date1->year;i++)
		{
			isR=isr(i);
			if(isR)
			{
				date+=366;
			}
			else
			{
				date+=365;
			}
		}
		for(j = 1;j < date1->month;j++)
		{
			temp.month = j;
			temp.year = date1->year;
			date += month_day(&temp);
		}
		
		for(j = 12;j > date2->month;j--)
		{
			temp.month = j;
			temp.year = date2->year;
			date += month_day(&temp);
		} 
		date=date+month_day(date2) - date2->day + date1->day;
	}
	else
	{
		if(date1->month > date2->month)
		{
			for(j = date2->month + 1;j < date1->month;j++)
			{
				temp.month = j;
				temp.year = date1->year;
				date += month_day(&temp);
			}
			date = date + month_day(date2) - date2->day + date1->day;
		}
		else
		{
			date = date + date1->day - date2->day;
		}
	}
	return date;
}
void returnweek(Date * date)
{
	Date date1;
	
	int isbig;
	int ndate;
	int week;
	date1.year = 2012;
	date1.month = 1;
	date1.day = 1;
	isbig=Isbig(date,&date1);
	ndate=returnday(date,&date1);
	week=ndate%7;
	if(isbig)
	{
		switch(week)
		{
		case 0:
			printf("Sunday\n");
			break;
		case 6:
			printf("Monday\n");
			break;
		case 5:
			printf("Tuesday\n");
			break;
		case 4:
			printf("Wednesday\n");
			break;
		case 3:
			printf("Thursday\n");
			break;
		case 2:
			printf("Friday\n");
			break;
		case 1:
			printf("Saturday\n");
			break;
		}
	}
	else
	{
		switch(week)
		{
		case 0:
			printf("Sunday\n");
			break;
		case 1:
			printf("Monday\n");
			break;
		case 2:
			printf("Tuesday\n");
			break;
		case 3:
			printf("Wednesday\n");
			break;
		case 4:
			printf("Thursday\n");
			break;
		case 5:
			printf("Friday\n");
			break;
		case 6:
			printf("Saturday\n");
			break;
		}
	}
}

void calader(Date * date)
{
	int days = month_day(date);
	int i=1;
	int weekday=0;
	int isbig=0;
	Date  date1;
	Date  ntemp;
	date->day=1;
	ntemp.year = date->year;
	ntemp.month = date->month;
	date1.year = 2012;
	date1.month = 1;
	date1.day = 1;
	weekday=(returnday(date,&date1))%7;
	isbig=Isbig(date,&date1);
	printf("  Sun  Mon  Tue  Wed  Thu  Fri  Sat\n");
	
	if(isbig)
	{
		switch(weekday)
		{
		case 0:
			printf("  %2d",i);
			break;
		case 6:
			printf("       %2d",i);
			break;
		case 5:
			printf("            %2d",i);
			break;
		case 4:
			printf("                 %2d",i);
			break;
		case 3:
			printf("                      %2d",i);
			break;
		case 2:
			printf("                           %2d",i);
			break;
		case 1:
			printf("                                %2d\n",i);
			break;
		}
	}
	else
	{
		switch(weekday)
		{
		case 0:
			printf("  %2d",i);
			break;
		case 1:
			printf("       %2d",i);
			break;
		case 2:
			printf("            %2d",i);
			break;
		case 3:
			printf("                 %2d",i);
			break;
		case 4:
			printf("                      %2d",i);
			break;
		case 5:
			printf("                           %2d",i);
			break;
		case 6:
			printf("                                %2d\n",i);
			break;
		}
	}
	for(i=2;i<=days;i++)
	{
		ntemp.day = i;
		weekday=(returnday(&ntemp,&date1))%7;
		if(isbig)
		{
			if(weekday==0)
			{
				printf("  %2d",i);
			}
			else
				if(weekday>1&&weekday<7)
				{
					printf("   %2d",i);
				}
				else
				{
					printf("   %2d\n",i);
				}
				
		}
		else
		{
			if(weekday==0)
			{
				printf("  %2d",i);
			}
			else
				if(weekday>0&&weekday<6)
				{
					printf("   %2d",i);
				}
				else
				{
					printf("   %2d\n",i);
				}
				
		}
		
	}	
	printf("\n");
}
void Show(Date * date,int *choose)
{
	int show=1;
	int ndate;

	Date  date1;
	Date d=*date;
	printf("Please choose : 1,Weekday   2,calader    3,相差天数\n");
	scanf("%d",choose);
	
	switch(*choose)
	{
	case 1:
		returnweek(&d);
		break;
	case 2:
		calader(&d);
		break;
	case 3:
		Input(&date1);
		ndate=returnday(&d,&date1);
		printf("%d\n",ndate);
		break;
	default:
		
		break;
	}
	
}

这样写可以减少主文件中的代码，将各个函数封装，而且调用时只要知道.h的头文件就行了。

ps:这个是用TC写的。