C语言数组写输入年月计算这个月1号与这一年的元旦相差多少天？

Question

急用哈~~~先谢过了

Answer 1

# include<stdio.h>
main()
{
int s=0,n,year,month,i;
printf("year month");
scanf("%d %d",&year,&month);
for(i=1;i<month;i++)
{
if(i==2)
{ if(year%4==0&&year%100||year%400==0) n=29;
else n=28;}
else if(i==4||i==6||i==9||i==11) n=31;
else n=30;
s+=n;}
printf("%d",s);
}