c语言 从键盘输入年份和该年中的第几天,计算并输出该天的日期答:Main(){ int year,day,d,m,leap;int Month[12]={31,28,31,30,31,30,31,31,30,31,30,31};printf("Input the year and day:\n");scanf("%d",&year);scanf("%d",&day);if( (year%4!=0) ||( (year%100==0)&& (year%400!=0)))leap=0;//不是闰年 else leap=1;//是...