C语言程序设计教程（第三版）课后习题11.1 （C语言代码）

解题思路:利用结构体和数组思路清晰，由于本人能力有限，所以代码较长，但是逻辑非常清楚





注意事项:





参考代码:

#include<stdio.h>

int main()

{struct whichday

{int year;

 int month;

 int data;

}day;

int a,i,j,sum,b[12]={31,28,31,30,31,30,31,31,30,31,30,31},c[12]={31,29,31,30,31,30,31,31,30,31,30,31};                              //记录year是否为闰年

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

if(day.year%400==0)

{

a=1;

}

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

{

a=1;

}

else

{

a=0;

}

if(a==1)

{sum=day.data;

 if(year.month==1)

  {

   printf("%d\n",sum);

  } 

   else

 {

   for(i=0;i<=day.month-2;i++)

      {

       sum=sum+b[i];

      }

   printf("%d\n",sum);

 }

}

if(a==0)

{

 sum=day.data;

 if(year.month==1)

  {

   printf("%d\n",sum);

  } 

   else

 {

   for(j=0;j<=day.month-2;j++)

      {

       sum=sum+c[j];

      }

   printf("%d\n",sum);

 }

}

return 0;

}