正序和倒序两种代码哪个好?
#include <stdio.h>
int main()
{
/* 定义需要计算的日期 */
int year = 2008;
int month = 8;
int day = 8;
/*
* 请使用switch语句,if...else语句完成本题
* 如有想看小编思路的,可以点击左侧任务中的“不会了怎么办”
* 小编还是希望大家独立完成哦~
*/
int sum;
switch (month)
{
case 1:sum=0+day;break;
case 2:sum=31+day;break;
case 3:sum=31+28+day;break;
case 4:sum=31+28+31+day;break;
case 5:sum=31+28+31+30+day;break;
case 6:sum=31+28+31+30+31+day;break;
case 7:sum=31+28+31+30+31+30+day;break;
case 8:sum=31+28+31+30+31+30+31+day;break;
case 9:sum=31+28+31+30+31+30+31+31+day;break;
case 10:sum=31+28+31+30+31+30+31+31+30+day;break;
case 11:sum=31+28+31+30+31+30+31+31+30+31+day;break;
case 12:sum=31+28+31+30+31+30+31+31+30+31+30+day;break;
}
if(year%4==0 && month>2)
sum=sum+1;
else
sum=sum;
printf("%d年%d月%d日是该年的第%d天",year,month,day,sum);
return 0;
}
#include <stdio.h>
int main()
{
/* 定义需要计算的日期 */
int year = 2008;
int month = 8;
int day = 8;
/*
* 请使用switch语句,if...else语句完成本题
* 如有想看小编思路的,可以点击左侧任务中的“不会了怎么办”
* 小编还是希望大家独立完成哦~
*/
int sum=0;
switch (month)
{
case 12:sum=sum+30;
case 11:sum=sum+31;
case 10:sum=sum+30;
case 9:sum=sum+31;
case 8:sum=sum+31;
case 7:sum=sum+30;
case 6:sum=sum+31;
case 5:sum=sum+30;
case 4:sum=sum+31;
case 3:if(year%4==0)
sum=sum+29;
else sum=sum+28;
case 2:sum=sum+31;
case 1:sum=sum+day;
}
printf("%d年%d月%d日是该年的第%d天",year,month,day,sum);
return 0;
}