C语言练习笔记：计算日期程序编写

#include <stdio.h>

#include <stdlib.h>

 

struct date{

int day;

int month;

int year;

};

int total=0;

int countday(const int *n,struct date m);

int main()

{

inty[12]={31,29,31,30,31,30,31,31,30,31,30,31};

 

int ch;

struct date getdate;

printf("请输入你的日期/n");

scanf("%d%d%d",&getdate.year,&getdate.month,&getdate.day);

if(getdate.month>12&&getdate.month<0)

{

printf("请输入正确的月份/n");

scanf("%d",&getdate.month);

if(getdate.day>31&&getdate.day<0)

{

printf("请重新输入,在1~31范围内/n");

scanf("%d",&getdate.day);

}

if(getdate.year%4==0  && getdate.year%100!=0 && getdate.year%400==0)

{

printf("今年是闰年/n");

   ch=countday(y,getdate);

printf("从%d年头开始已经过去%d天了哦",getdate.year,ch);

}

else

{

   y[1]=28;

printf("今年是平年/n");

ch=countday(y,getdate);

printf("从%d年头开始 已经过去 %d天了",getdate.year,ch);

}

return 0;

}

 

 

int countday(const int *n,struct date m)

{

int i;

for(i=0;i<m.month;i++)

       total+=n[i];

total=total+m.day;

return total;

}

 

 

 

    编译环境：VC6.0，XP