今天看见个别人发的万年历程序，就研究好久，后来似有所得，便按照原来的思路也想写个万年历，几几经努力总是失败，证明自己还差的太远，可我实在想知道失败的原因，请大家帮看看，帮找找
#include<stdio.h>
#include<stdlib.h>
char month_name[13][9]={"","January","February","March","April","May","June","July","August","September","October","November","December"};
char weekday_name[7][4]={"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
int  month_day[12]={31,29,31,30,31,30,31,31,30,31,30,31};
int month2[6][7];
 
print1(month)
{
  int t,i,j,p=0,m=1;
  printf("===%s===\n",month_name[month]);
  for(t=0;t<=6;t++)
  printf("%7s",weekday_name[t]);
  printf("\n");
  for(i=0;i<6;i++)
  for(j=0;j<7;j++)
  {
    printf("%7d",month2[i][j]);
    p++;
    if(p%7==0)
    printf("\n");
  }
}

leapyear(year)
{
    if(year%4==0&&year%100!=0||year%400==0)
    return(1);
    else
    return(0);
}
calendar(int year)
{
    int month,weekday,x;
    int i,j,t=0,k;
    printf("*****%d*****",year);
    weekday=(year+(year-1)/4-(year-1)/100+(year-1)/400)%7;
    if(leapyear(year))
    month_day[2]=29;
    else
    month_day[2]=28;
    for(month=1;month<=12;month++)
    {
        scanf("%d",&x);
        for(i=0;i<6;i++)
        for(j=0;j<=6;j++)
        month2[i][j]=0;

        for(k=1;k<=month_day[month];k++)
        {
           month2[t][weekday]=k;   
           weekday++;
           if(weekday=6)
           {
               weekday=0;
               t++;
           }
         }
        print1(month,k);
    }
}

main()
{
    int year;
    printf("qing shu ru nian fen:\n");
    scanf("%d",&year);
    calendar( year);
    getch();
}
另外小弟在程序中加的scanf("%d",&x);只是为了让程序停顿一下，便于便于排错，没有实际意义。
帮看看，稍稍占用点时间，谢谢。

我就是看了那个帖子才想写万年历的，可我比对半天也没发现错在哪里，

编译倒是没有报错，显示的样子也对，就是所有的日期都显示0

谁帮看看啊

感谢感谢，十分感谢，你的话对我这样自学的人太有帮助了，平时总觉得自己很细致，没想到第一次写点东西就有这多错误

其实真的不爱用do...while循环，因为个人认为FOR可以解决现阶段所有循环问题

#include<stdio.h>
#include<stdlib.h>
char month_name[13][6]={"","JAN","FEB","MAR","APR","JUN","JUL","AUG","SEP","OCT","NOV","DEC"};
char week_name[7][6]={"sun","mon","tue","wed","thu","fir","sat"};
int month_day[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
int month2[6][7];

leapyear(int year)
{
    if(year%4==0&&year%100!=0||year%400==0)
    return(1);
    else
    return(0);
}

int calendar(int year)
{

    int month;
    int weekday;
    int i,j,k,t=0,x;
    if(leapyear(year))month_day[2]=29;
    else month_day[2]=28;
    weekday=(year+(year-1)/4-(year-1)/100+(year-1)/400)%7;


    for(month=1;month<=12;month++)
    {    t=0;
            for(i=0;i<6;i++)
    for(j=0;j<7;j++)
    month2[i][j]=0;
        scanf("%d",&x);
        for(k=1;k<=month_day[month];k++)
        {
            month2[t][weekday]=k;
            weekday++;
            if(weekday==7)
            {
                weekday=0;
                t++;
            }
        }
     print1(month);
    }
}

print1(int month)
{
    int i,j,p,m=0;
    printf("=====%s=====\n",month_name[month]);
    for(p=0;p<7;p++)
    printf("%7s",week_name[p]);
    printf("\n");
    for(i=0;i<6;i++)
    for(j=0;j<7;j++)
    {   if(month2[i][j]==0)
        printf("%7c",32);
        else
        printf("%7d",month2[i][j]);
        m++;
        if(m%7==0)
        {
            printf("\n");
        }

     }
     printf("\n");
}

main()
{
    int year;
    printf("qing shu ru nian fen:\n");
    scanf("%d",&year);
        printf("*****%d*****",year);
    calendar(year);
    system("puse");
    getch();
}
解决了 ，真的很艰难，