Question

error C2018: unknown character '0xac'

#include"stdio.h"

struct date
{
int year;
int month;
int day;
}dat={0,0,0}; /*对结构体变量赋初值 */

void main()
{
int year,month,day;
int x;
int days(int,int,int);
scanf("%d,%d,%d",&year,&month,&day);
x=days(year,month,day);
printf("%d年%d月%d日在本年中是第%d天。",year,month,day,x);
}

int days(int dat.year,int dat.month,int dat.day)
{ int month[12];
int i,int sum;
if(dat.year%4==0&&dat.year%100==0||dat.year%400==0)
month[12]={31，29，31，30，31，30，31，31，30，31，30，31};
else
month[12]={31，28，31，30，31，30，31，31，30，31，30，31};
for(i=0;i<dat.month;i++)
sum=sum+month[i];
return (sum);
}
错误信息
xiti111.c
E:\c\zuoye\xiti111\xiti111.c(20) : error C2143: syntax error : missing ')' before '.'
E:\c\zuoye\xiti111\xiti111.c(20) : error C2143: syntax error : missing '{' before '.'
E:\c\zuoye\xiti111\xiti111.c(20) : error C2059: syntax error : '.'
character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(24) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(24) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(24) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(24) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xa3'
E:\c\zuoye\xiti111\xiti111.c(26) : error C2018: unknown character '0xac'
Error executing cl.exe.

Answer 1

主要是逗号全角的问题，改成半角就行了
====================================
#include"stdio.h"

struct date
{
int year;
int month;
int day;
}dat={0,0,0}; /*对结构体变量赋初值 */

void main()
{
int year,month,day;
int x;
int days(int,int,int);
scanf("%d,%d,%d",&year,&month,&day);
x=days(year,month,day);
printf("%d年%d月%d日在本年中是第%d天。",year,month,day,x);
}

int days(int datyear,int datmonth,int datday)
{
int i,sum;
if(datyear%4==0&&datyear%100==0||datyear%400==0)
{
int month[12]={31,29,31,30,31,30,31,31,30,31,30,31};
for(i=0;i<datmonth;i++)
sum=sum+month[i];
}
else
{
int month[12]={31,28,31,30,31,30,31,31,30,31,30,31};
for(i=0;i<datmonth;i++)
sum=sum+month[i];
}

return (sum);
}