程序填空:下列程序实现的功能是输入某年某月某日,输出是这一年的第几天。#includevoid main(){int days;int data_year,data_month,data_day;printf("请输入日期(年,月,日):");scanf("%d, %d, %d", &data_year, &data_month, &data_day);switch(data_month){case 1:days = data_day;break;case 2:days = data_day+;break;case 3:days = data_day+59;break;case 4:days = data_day+90;break;case 5:days = data_day+;break;case 6:days = data_day+151;break;case 7:days = data_day+181;break;case 8:days = data_day+212;break;case 9:days = data_day+243;break;case 10:days = data_day+273;break;case 11:days = data_day+304;break;case 12:days = data_day+334;break;}if(data_year%4==0&&data_year%100!=0data_year%400==0)if(data_month>=3)days =;printf("%d月%d日是%d年的第%d天.\n", data_month, data_day, data_year, days);}