main()
{
struct date
{int year;
int month;
int day;};
int i,days=0;
int a[13]={0,0,31,28,31,30,31,30,31,31,30,31,30};
printf("Input year month day:\n");
scanf("%d,%d,%d",&date.year,&date.month,&date.day);
for(i=1;i<=date.month;i++)
days=days+a[i];
days=date.day+days;
if((date.year%4==0&&date.year%100!=0||date.year%400==0)&&date.month>2)
days=days+1;
printf("%d",days);
}
编译时，系统说没有定义date,为什么，结构体是怎么定义的请各位大侠指点

main()
{
struct date
{int year;
int month;
int day;}; /*这一句改成int day;}date; 就可以了 */
int i,days=0;
int a[13]={0,0,31,28,31,30,31,30,31,31,30,31,30};
printf("Input year month day:\n");
scanf("%d,%d,%d",&date.year,&date.month,&date.day);
for(i=1;i<=date.month;i++)
days=days+a[i];
days=date.day+days;
if((date.year%4==0&&date.year%100!=0||date.year%400==0)&&date.month>2)
days=days+1;
printf("%d",days);
}

我试一下

可以了，谢了，大侠

其实dos.h中已经有定义了这个结构体