c语言编程：打印年历

用c语言编程：打印年历~

没想到这个程序会做这么长，要不得多要点分。
#include
void main()
{
int i,j,k,year,week;
int day[]={31,28,31,30,31,30,31,31,30,31,30,31};
char month[12][10]={"January","February","March","April","May","June","July","August","September","October","November","December"};
printf("Input year you want to print:");
scanf("%d",&year);
if((year%4==0&&year%100!=0)||(year%400==0)) day[1]++;
week=(35+year+year/4-year/100+year/400)%7; //计算当年的1月1日是周几的公式

for(i=0;i<12;i++)
{
printf("
%s
",month[i]);
printf("Sun Mon Tue Wed Thu Fri Sat
");
for(k=0;k<week;k++) printf(" ");
for(j=1;j<=day[i];j++)
{
printf("%3d ",j);
if(++week>=7)
{
printf("
");
week=week%7;
}
}
printf("
");
}
}

# include
# include
void printmonth(int m);
void printhead(int m);
int daysofmonth(int m);
int firstday(int y);
int year,weekday;

void main()
{
int i;
printf("请输入年份：");
scanf("%d",& year);
weekday=firstday(year);
printf("

");
printf(" %d年
",year);
for(i=1;i<=12;i++)
{
printmonth(i);
printf("
");
}
printf("

");
}
void printmonth(int m) //打印每月日历
{
int i,days;
printhead(m);
days=daysofmonth(m);
for(i=1;i<=days;i++)
{
printf("%5d",i);
weekday=(weekday+1)%7;
if (weekday==0) printf("
");
}
}
void printhead(int m) //打印每月的日历头（判定起始位置）
{
int i;
printf("
%d月 日 一 二 三 四 五 六
",m);
printf(" ");
for(i=0;i<weekday;i++)
printf(" ");
}
int daysofmonth(int m) //每月的天数
{
switch (m)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:return 31;
case 4:
case 6:
case 9:
case 11:return 30;
case 2:if (((year%4==0 && year%100!=0)||year%400==0))
return 29;
else
return 28;
default: return 0;
}
}
int firstday(int y) //判断某年元旦是星期几
{
double s ;
s=floor(year-1+(year-1)/4.0-(year-1)/100.0+(year-1)/400.0+1);
return (int)s%7;
}

#include <stdio.h>
void main()
{
int i,j,k,year,week;
int day[]=;
char month[12][10]=;

printf("Input year you want to print:");
scanf("%d",&year);

if((year%4==0&&year%100!=0)||(year%400==0)) day[1]++; //判断是否闰年
week=(35+year+year/4-year/100+year/400)%7; //计算当年的1月1日是周几的公式

for(i=0;i<12;i++)
{
printf("\n%s\n",month[i]); //输出月份的英文
printf("Sun Mon Tue Wed Thu Fri Sat\n"); //输出表头
for(k=0;k<week;k++) printf(" "); //每月一号对齐它的星期数
for(j=1;j<=day[i];j++)
{
printf("%3d ",j);
if(++week>=7)
{
printf("\n");
week=week%7;
}
}
printf("\n");
}
}


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四会市13827358522： 用c语言编程:打印年历 - ？
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