dev運行時出現源文件未編譯的情況是什么原因，應該怎么樣解決呢#include?<stdio.h> int?main() { ????int?day,month,year,sum,leap; ????printf("\n請輸入年、月、日，格式為：年,月,日（2015,12,10）\n"); ????scanf("%d,%d,%d",&year,&month,&day);??//?格式為：2015,12,10 ????switch(month)?//?先計算某月以前月份的總天數 ????{ ????????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("data?error");break; ????} ????sum=sum+day;?//?再加上某天的天數 ????if(year%400==0||(year%4==0&&year%100!=0))?{//?判斷是不是閏年 ????????leap=1; ????}?else?{ ???????leap=0; ????} ????if(leap==1&&month>2)?{?//?*如果是閏年且月份大于2,總天數應該加一天 ????????sum++; ????} ????printf("這是這一年的第?%d?天。",sum); ????printf("\n"); ????return?0; }