题目是这样的,计算日期(含年,月,日)是该年的第几天,大家帮忙帮我看看程序
#include<stdio.h>
int str(struct boy a);
int main(void)
{
    struct boy{
        int year;
        int month;
        int day;}a={2004,11,30};
    int w;
    w=str(a);
    printf("%d",w);}
int str(struct boy a)
{
        int x[12]={31,28,31,30,31,30,31,31,30,31,30,31};
        int count=0,i;
        count=a.day;
       printf("%d\n",count);
        for(i=0;i<a.month-1;i++)
            count+=x[i];
        printf("%d\n",count);
        if(a.month>2&&((a.year%4==0)&&(a.year%100!=0)||(a.year%400==0)))
        count=count+1;   
        printf("%d\n",count);
        return (count);
}

把结构作为参数传进去,就报错了,晕,大家帮忙看看哪错了呀?