C语言,输入年月日,输出星期几答:include<stdio.h> define SIZE 31 void inputCheck(int,int,int);int leaYear(int);main(){ int year,month,day,d1,result,sum=0;scanf("%d%d%d",&year,&month,&day);inputCheck(year,month,day);for(;year>1; year--){ if((year%4==0 && year%100!=0)||(year%400==0))sum...