这是一道结构体题斑竹帮我做了,没通,我改了,依然不通.,我找不到原因,请诸位帮忙
#include<stdio.h>
struct date
{
int year;
int month;
int day;
}a;

main()
{
printf("please input year,nonth,day");
scanf("%d,%d,%d",&a.year,&a.month,&a.day);
printf("There are %d days till %d month %d day\n",fun(a)+a.day,a.month,a.day);
}

int fun(a)
{
int i,leap=0,sum=0;
int num[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},{0,31,29,31,30,31,30,31,31,30,31,30,31}};
if(a.year%4==0&&a.year%100!=0||a.year%400==0)
leap=1;
for(i=0;i<a.month;i++)
sum+=num[leap][i];
return sum;
}

#include<stdio.h>
struct date
{
int year;
int month;
int day;
}a;
int fun();

main()
{
printf("please input year,nonth,day");
scanf("%d,%d,%d",&a.year,&a.month,&a.day);
printf("There are %d days till %d month %d day\n",fun()+a.day,a.month,a.day);
return 0;
}

int fun()
{
int i,leap=0,sum=0;
int num[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},{0,31,29,31,30,31,30,31,31,30,31,30,31}};
if(a.year%4==0&&a.year%100!=0||a.year%400==0)
leap=1;
for(i=0;i<a.month;i++)
sum+=num[leap][i];
return sum;
}

#include<stdio.h>
struct date
{
int year;
int month;
int day;
}a;
int fun(struct date);

main()
{
printf("please input year,nonth,day");
scanf("%d,%d,%d",&a.year,&a.month,&a.day);
printf("There are %d days till %d month %d day\n",fun(a)+a.day,a.month,a.day);
}

int fun(struct date a)
{
int i,leap=0,sum=0;
int num[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},{0,31,29,31,30,31,30,31,31,30,31,30,31}};
if(a.year%4==0&&a.year%100!=0||a.year%400==0)
leap=1;
for(i=0;i<a.month;i++)
sum+=num[leap][i];
return sum;

那个a怎么就不是全局变量啊？

还有在C中，data a;这样定义是错误的。在C++中可以把struct省掉，而C中是不可以的。

这个会运行不通? 什么编译器

#include<stdio.h>
struct date
 {
 int year;
 int month;
 int day;
 };
int fun(date);
void main()
{
 date a={1997,2,1};
    printf(\"There are %d days till %d月%d号\n\",fun(a)+a.day,a.month,a.day);
}

int fun(date a)
{
 int leap=0,sum=0;
 int num[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},
 {0,31,29,31,30,31,30,31,31,30,31,30,31}};
 if((a.year%4==0&&a.year%100!=0)||a.year%400==0) leap=1;
 for(int i=0;i<a.month;i++) sum+=num[leap][i];
 return sum;
}

#include<stdio.h>
struct date
{
int year;
int month;
int day;
};
int fun(date);
void main()
{
date a={1997,2,1};
    printf(\"There are %d days till %d月%d号\n\",fun(a)+a.day,a.month,a.day);
}

int fun(date a)
{
int leap=0,sum=0;
int num[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},
{0,31,29,31,30,31,30,31,31,30,31,30,31}};
if((a.year%4==0&&a.year%100!=0)||a.year%400==0) leap=1;
for(int i=0;i<a.month;i++) sum+=num[leap][i];
return sum;
}

这个c编译器通不过,C++编译器能通过.
因为有date a;