?? static.c
字號:
/* 給出年、月、日,計算該日是該年的第幾天 */
# include <stdio.h>
int sum_day(int month, int day);
int leap(int year);
void main()
{
int year, month, day;
int days;
printf("請輸入日期(年,月,日):");
scanf("%d, %d, %d", &year, &month, &day);
printf("%d年%d月%d日", year, month, day);
days = sum_day(month, day); /* 調用函數sum_day() */
if(leap(year) && month>=3) /* 調用函數leap() */
days = days + 1;
printf("是該年的第%d天.\n", days);
}
/* 定義靜態存儲變量并賦初值 */
static int day_tab[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
int sum_day(int month, int day) /* 計算日期 */
{
int i;
for(i=1; i<month; i++)
day = day + day_tab[i];
return day;
}
int leap(int year)
{
int leap;
leap = (year%4==0&&year%100!=0)||(year%400==0);
return leap;
}
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