新学C，遇到困难
我编的一个关于年月的问题，可是每次随便输入一对数字输出的都是润年，并且马上WINDOWS会出现出错，找了半天也没找出错误，还请大侠们能帮帮忙
#include <stdio.h>
void main()
{
int year,month,days;
char season,leap;
char spring,summer,autumn,winter; //是不是定义这些字符串的时候出错？
char runnian,pingnian;
printf("input the year(year>0) and month(1<=month<=12):");
scanf("%d%d",&year,&month);
if(year>0)
{if("year/4==0&&y/100!=0||year/400==0")
leap=runnian;
else
leap=pingnian;
}
else
printf("error year input! please reset!");

if(month>=1&&month<=12)
{
if(month>=3&&month<=5)
season=spring;
if(month>=6&&month<=8)
season=summer;
if(month>=9&&month<=11)
season=autumn;
else
season=winter;
}
else
printf("error month input! please reset!"); // 出错
switch(month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days=31;
case 4:
case 6:
case 9:
case 11:
days=30;
case 2:
if(leap=runnian)
days=29;
else
days=28;
}

if(leap==runnian)
printf("该年是润年\n");
else
printf("该年是平年\n");
printf("季度是:%s\n",season);
printf("这个月的天数是:%d",days);
}

[此贴子已经被作者于2006-10-15 16:41:27编辑过]

有没有写错程序

应该没错吧，但是就是运行到一半就出错，不知道什么原因

好多错误呀!
其中char spring,summer,autumn,winter;

改为 char *spring="spring",*summer="summer",*autumn="autumn",*winter="winter";

其中char season
改为 char *season;

..还有许多,我就写2个,你好好看看书

呵呵，见笑了啊，刚学了没几天，好多东西都不熟，还请大侠能多指教，让小弟能有进步
这个程序在那些定义的时候我也觉得不对，但不知道怎么改。看看你改的用指针，的确有道理。
如果这个程序还有除了指针方面什么错误的话，还请帮我指出来，谢谢了

好,等一下,我发出正确的程序

期待中。。。
先谢谢了！

你的程序毛病很多...自己有时间改善一下吧

#include <stdio.h>
void main()
{
    int year,month,days;
    bool leap=0;
    char *season;
    printf(\"input the year(year>0) and month(1<=month<=12):\");
    scanf(\"%d%d\",&year,&month);
if(year>0)                               
    {if(year/4==0&&year/100!=0||year/400==0)
        leap=1;
    else
        leap=0;
    }
else
     printf(\"error year input!  please reset!\");         
                                         
if(month>=1&&month<=12)            
    {
     if(month>=3&&month<=5)
        season=\"spring\";
    if(month>=6&&month<=8)
        season=\"summer\";
    if(month>=9&&month<=11)
        season=\"autumn\";
    if(month>11&&month<3)
        season=\"winter\";
    }
else 
     printf(\"error month input! please reset!\");
switch(month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
         days=31;break;
case 4:
case 6:
case 9:
case 11:
         days=30;break;
case 2:
    if(leap)
    {days=29;break;}
    else 
    {days=28;break;}
}

if(leap)
     printf(\"该年是润年\n\");
else
     printf(\"该年是平年\n\");
printf(\"季度是:%s\n\",season);
printf(\"这个月的天数是:%d\",days);
}

#include <stdio.h>
int main() /*不应该用void,具体请看其它资料*/
{
int year,month,days;
int leap=0; /*1.闰年 0.平年 默认为平年*/
char *season;
printf("input the year(year>0) and month(1<=month<=12):");
scanf("%d%d",&year,&month);
if(year>0)
{if(year/4==0 && year/100!=0 || year/400==0) /*表达式不要放在""内*/
leap=1;
}
else
{ printf("error year input! please reset!"); return; }

if(month>=1 && month<=12)
{
if(month>=3 && month<=5)
season="spring"; /*直接用字符串附值*/
else {if(month>=6 && month<=8)
season="summer"; /*直接用字符串附值*/
else {if(month>=9 && month<=11)
season="autumn"; /*直接用字符串附值*/
else
season="winter"; /*直接用字符串附值*/
} } }
else
{ printf("error month input! please reset!"); return; }
switch(month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days=31; break; /*一定要写break*/
case 4:
case 6:
case 9:
case 11:
days=30; break;
case 2:
if(leap) {
days=29; break;
}
else
days=28;
}

if(leap)
printf("该年是润年\n");
else
printf("该年是平年\n");
printf("季度是:%s\n",season);
printf("这个月的天数是:%d",days);
getch();
return; /*最好加上*/

}

哦，一看不知道，看了吓一跳，谢谢你的指点，还有unicorn 的代码
今天受益匪浅啊！呵呵，我会仔细看的！