int year = 2008; int month = 8; int day = 8; int sum,flag; switch(month) { case 1:sum=0;break; case 2:sum=31;break; case 3:sum=59;break; case 4:sum=90;break; case 5:sum=120;break; case 6:sum=151;break; case 7:sum=181;break; case 8:sum=212;break; case 9:sum=243;break: case 10:sum=273;break; case 11:sum=304;break; case 12:sum=334;break; default:printf("输入有误!");break; } sum+=day; if(year%400==0||(year%4==0&&year%100!=0)) flag=1; else flag=0; if(flag==1&&month>2) sum++; printf("d%年d%月d%日是该年的第d%天",year,month,day,sum); return 0;}
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