【NO.2】set day of year from month & day

#include "stdafx.h"int day_of_year(int year, int month, int day);int _tmain(int argc, _TCHAR* argv[]){int year = 0, month = 0, day = 0;printf("please input year month day(yyyy month day)\n");scanf_s("%4d %2d %2d", &year, &month, &day);int DayOfYear = day_of_year(year, month, day);printf("%4d-%2d-%2d is the %d days in this year", year, month, day, DayOfYear);getchar();}/*day_of_year: set day of year from month & day*/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;if ((year % 4) == 0 && (year % 100 != 0) || (year % 400 == 0)){leap = 1;}else{leap = 0;}for(i=1; i < month; i++){day+= daytab[leap][i];}set day of year from month & dayreturn day;}