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:                
                    思考半天没想出来,结果用一个数组解决了,感觉自己的代码还可以再优化
注意事项:

参考代码:

            #include<stdio.h>
            struct
           {
            int years;
            int month;
            int day;
            }year;
            int main(void)
           {
                 int days[12]={31,28,31,30,31,30,31,31,30,31,30,31},ri=0;                    //定义日期和天数
                 scanf("%d %d %d",&year.years,&year.month,&year.day);    

                 if(year.years%100!=0&&year.years%4==0||year.years%100==0&&year.years%400==0) //判断闰年
                 {  

                        for(int i=0;i<year.month;i++)
                            ri+=days[i-1];                                                        
                        printf("%d",ri+1+year.day);
                 }
                 else
                {
                      for(int i=0;i<year.month;i++)
                           ri+=days[i-1];
                      printf("%d",ri+year.day);
                 }
            return 0;
            }