Posted on 2007-07-02 16:19
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C語言學習歷程
#include <stdio.h>
struct date
{
int month;
int day;
int year;
};
int main(void)
{
struct date today,tomorrow;
int numberOfDays(struct date d);
printf("Enter today's date(mm dd yyyy):\n");
scanf("%i %i %i",&today.month,&today.day,&today.year);
if(today.day!=numberOfDays(today))
{
tomorrow.day=today.day+1;
tomorrow.month=today.month;
tomorrow.year=today.year;
}
else if(today.month!=12)
{
tomorrow.day=1;
tomorrow.month=today.month+1;
tomorrow.year=today.year;
}
else
{
tomorrow.day=1;
tomorrow.month=1;
tomorrow.year=today.year+1;
}
printf("Tomorrow's date is %i %i %.2i.\n",tomorrow.month,tomorrow.day,tomorrow.year%100);
return 0;
}
int numberOfDays(struct date d)
{
int days;
bool isLeapYear(struct date d);
const int daysPerMonth[12]={31,28,31,30,31,30,31,31,30,31,30,31};
if(isLeapYear(d)==1&&d.month==2)
{
days=29;
}
else
days=daysPerMonth[d.month-1];
return days;
}
bool isLeapYear(struct date d)
{
bool leapYearFlag;
if((d.year%4==0&&d.year%100!=0)||d.year%400==0)
{
leapYearFlag=1;
}
else
leapYearFlag=0;
return leapYearFlag;
}
運行結果：
