如何用C语言打出一个月历表

Question

要求输入年月，输出对应的月历表，月历表要契合标准日历，第一行从星期一开始，星期日结束。

Answer 1

代码如下，如有帮助，请帮忙采纳一下，谢谢。
效果图是输入2018 5

代码：

#include <stdio.h>
int main()
{
    int year,mon; 
    int i,j,cnt = 0;
     int t = 1,k=1;
    int arr[]={0,31,28,31,30,31,30,31,31,30,31,30,31};
    int curYear,curMon,curDay, wk;
    curYear = 2021;
    curMon = 10;
    curDay = 27;
    wk = 3;
    scanf("%d %d",&year,&mon);
    if(curYear >= year)
    {
        for(i=mon;i<=12;i++)
        {
            if(i==2)
            {
                if(year%4==0 && year%100 !=0 || year%400==0)
                    cnt += 29;
                else
                    cnt += 28;
            }else
                cnt += arr[i];
        }
        for(i=year+1;i<curYear;i++)
        {
            if(i%4==0 && i%100 !=0 || i%400==0)
                cnt += 366;
            else
                cnt += 365;
        }
        for(i=1;i<curMon;i++)
        {
            if(i==2)
            {
                if(curYear%4==0 && curYear%100 !=0 || curYear%400==0)
                    cnt += 29;
                else
                    cnt += 28;
            }else
                cnt += arr[i];
        }
        cnt += curDay;
        wk = 7 - (wk+cnt)%7;
    }else
    {
        for(i=curMon+1;i<=12;i++)
        {
            if(i==2)
            {
                if(curYear%4==0 && curYear%100 !=0 || curYear%400==0)
                    cnt += 29;
                else
                    cnt += 28;
            }else
                cnt += arr[i];
        }
        for(i=curYear+1;i<year;i++)
        {
            if(i%4==0 && i%100 !=0 || i%400==0)
                cnt += 366;
            else
                cnt += 365;
        }
        for(i=1;i<mon;i++)
        {
            
            if(i==2)
            {
                if(year%4==0 && year%100 !=0 || year%400==0)
                    cnt += 29;
                else
                    cnt += 28;
            }else
                cnt += arr[i];
        }
        cnt += curDay;
        wk = (wk+cnt-1)%7;
    }

    
    printf("一 二 三 四 五 六 日\n");
    //int t = 1,k=1;
    if(year%4==0 && year%100 !=0 || year%400==0) arr[2]= 29;
    while(t <= arr[mon])
    {
        if(k<wk)
        {
            printf("   ");
            
        }else
        {
            printf("%-3d",t);
            t++;
        }
        
        if(k%7==0) printf("\n");
        k++;

    }
    return 0;

}