如何用C++打印月历

按下面的要求
2.20 (OJ112)打印某月的日历
问题描述 给定两个正整数year及month，打印当月的日历。
输入 输入数据有若干行。每行上有两个正整数year及month对应一种情形。
输出 对于每一种情形，先输出“Case #:”（#为序号，从1起），然后输出“year年month月”，换行，“Sun Mon Tue Wed Thu Fri Sat”，换行，日历内容，换行。
输入样例
2008 2
2009 2
2010 2
输出样例
Case 1: 2008年2月
Sun Mon Tue Wed Thu Fri Sat
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23

#include <iostream>
using namespace std;


int getdate(int y,int m);


int leap(int y);


void print(int y,int m);

int main()
{
int y,m;
int i=1;
cout<<"输入年份和月份:"; //这句话不想要可以删掉,只是作为提示.
while(cin>>y>>m)
{
if(y==0||m==0) { cout<<"over"<<endl;break;}
cout<<"Case "<<i<<":";
print(y,m);
i++;
cout<<"输入年份和月份:"; //这句话不想要可以删掉,只是作为提示.
}
return 0;
}

int getdate(int y,int m)
{
int w=(y+(y-1)/4-(y-1)/100+(y-1)/400)%7;
int days=0;
switch(m)
{
case 12: days+=30;
case 11: days+=31;
case 10: days+=30;
case 9: days+=31;
case 8: days+=31;
case 7: days+=30;
case 6: days+=31;
case 5: days+=30;
case 4: days+=31;
case 3: if(leap(y)) days+=29;
else days+=28;
case 2: days+=31;
case 1: days+=0;
}
w=(w+days)%7;
return w;
}

void print(int y,int m)
{
int w=getdate(y,m);
cout<<y<<"年"<<m<<"月"<<endl;

int month[12]={31,28,31,30,31,30,31,31,30,31,30,31};
if(leap(y)) month[1]=29;

cout<<"Sun\tMon\tTue\tWed\tThu\tFri\tSat"<<endl;
int i,j;
for(i=0;i<w;i++) cout<<"\t";

for(i=w,j=1;j<=month[m-1];i++,j++)
{
if(i%7==0) cout<<endl;
cout<<j<<"\t";
}
cout<<endl;
}

int leap(int y)
{
if((y%4==0&&y%100!=0)||y%400==0) return 1;
return 0;
}

1、可以用公式 ((year-1)+(year-1)/4-(year-1)/100+(year-1)/400+date)%7 计算任意一天是星期几。year是年份，date表示这天一年中的是第几天。 2、例程： #include<iostream>  #include<string>  #include<iomanip>  using namespace std;  int day[12][42];  string month_name[12]={"一月","二月","三月","四月","五月","六月",  "七月","八月","九月","十月","十一月","十二月"};  bool leap(int year)//判断是否为闰年  {  if((year%4==0&&year%100!=0)||(year%400==0))  return 1;  else return 0;  }  void print()//输出  {  int i,j,k,s,d;  for(i=0;i<4;i++)  {  cout<<setw(12)<<month_name[i*3]<<setw(26)<<month_name[i*3+1]<<setw(26)<<month_name[i*3+2]<<endl<<endl;  for(k=0;k<3;k++)  {  printf("日 一 二 三 四 五 六");  if(k!=2)printf(" ");  else printf("\n");  }  for(j=0;j<6;j++)  {  for(k=0;k<3;k++)  {  for(s=0;s<7;s++)  {  d=day[i*3+k][j*7+s];  if(d)printf("%-3d",d);  else printf(" ");  }  printf(" ");  }  printf("\n");  }  printf("\n");  }  }  int main()  {  int i,j,year,monthw[12],date;  int day_number[12]={31,28,31,30,31,30,31,31,30,31,30,31};  while(scanf("%d",&year)!=EOF)  {  if(leap(year))day_number[1]=29;  else day_number[1]=28;  date=1;  for(i=0;i<12;i++)  {  monthw[i]=((year-1)+(year-1)/4-(year-1)/100+(year-1)/400+date)%7;//计算每个月第一天是星期几  date+=day_number[i];  }  memset(day,0,sizeof(day));  for(i=0;i<12;i++)  {  for(j=monthw[i];j<monthw[i]+day_number[i];j++)  {  day[i][j]=j-monthw[i]+1;  }  }  print();  }  return 0;  }

//自己改下 #include<stdio.h> //#include<windows.h> int days[]={0,31,59,90,120,151,181,212,243,273,304,334,365}; int month[]={31,28,31,30,31,30,31,31,30,31,30,31}; char weekday[7][7]={"一","二","三","四","五","六","七"}; int week(int y,int m,int d) { int day=0; day=days[m-1]+d-1; return (y-1+(y-1)/4-(y-1)/100+(y-1)/400+day)%7; } void print() { puts("1.Week(查询某天是星期几)"); puts("2.Month(打印某月日历)"); puts("3.Calendar(打印某年日历)"); puts("4.Exit(退出)"); } void printmonth(int y,int m) { int i,j,w; w=(week(y,m,1)+1)%7; puts(" SUN MON TUE WED THU FRI SAT"); for(i=1;i<=w;i++) printf("%5c",' '); for(j=i;j<i+month[m-1]+(m==2&&(y%4==0&&(y%100)||y%400==0));j++) { printf("%5d",j-i+1); if(j%7==0) puts(""); } if((j-1)%7) puts(""); } int main() { int i,y,m,d,c; char op[1]; print(); while(scanf("%d",&c)==1) { if(c==1) { do { puts("请输入年月日（XXXX，XX，XX）"); scanf("%d%d%d",&y,&m,&d); printf("%4.4d年%2.2d月%2.2d日是星期%s，是否继续查询（Y/N）？\n",y,m,d,weekday[week(y,m,d)]); scanf("%s",op); }while(op[0]=='Y'); print(); } if(c==2) { do { puts("请输入要打印的月份（XXXX）"); scanf("%d%d",&y,&m); printf(" %4.4d年%2.2d月\n",y,m); printmonth(y,m); puts("是否继续打印（Y/N）？"); scanf("%s",op); }while(op[0]=='Y'); print(); } if(c==3) { do { puts("请输入要打印的年份（XXXX）"); scanf("%d",&y); printf(" %4.4d\n",y); for(i=1;i<=12;i++) { printf(" %2.2d月\n",i); printmonth(y,i); } puts("是否继续打印（Y/N）？"); scanf("%s",op); }while(op[0]=='Y'); print(); } if(c==4) { puts("是否要真的退出（Y/N）？"); scanf("%s",op); if(op[0]=='Y') return 0; else print(); } } }

#include void main(void) { int i,day,m; printf("请输入打印月的天数："); scanf("%d",&day); printf("请输入这个月开始的一天属于星期几（1=星期日，2=星期一...):"); scanf("%d",&m); for(i=1;i<=m;i++) printf(" "); for(i=1;i<=day;i++) { printf("%5d",i); m++; if (m%7==0) printf("\n"); } printf("\n&穿窢扁喝壮估憋台铂郡quot;); }