大神帮我看看这个求年月日是该年中的第几天，计算结果是4399232,小白找不出来，谢谢大家！！！

Question

#include<stdio.h> static char daytab[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},{0,31,29,31,30,31,30,31,31,30,31,30,31}}; int day_of_year(int year,int month,int day) {  int i,leap;  leap = year%4 == 0 && year%100 != 0 || year%400 == 0;  for(i=1;i<month;i++)  {  day += daytab[leap][i]; } return day; }  int main()  {  int year,month,day;  scanf("%d\n",&year);  scanf("%d\n",&month);  scanf("%d",&day);  day_of_year(year,month,day);  printf("这个是一年中的第%d天",day_of_year);  return 0;  }