一个能输出某一年日历的代码
//源代码
#include<stdio.h>
void main()
{
int year,month,i;
int monthtab[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},//非闰年每月天数
{0,31,29,31,30,31,30,31,31,30,31,30,31} }; //闰年每月天数
int weeks,leap,firstday,total,number,lines,days=0;
int monthlong[42];
printf("请输入年份和月份：\n");
scanf("%d%d",&year,&month);
printf("\t %d年%d月的日历\n",year,month);
if(year%4==0&&year0!=0||year%400==0)
leap=1;
else
leap=0;
total=year-1+(year-1)/4-(year-1)/100+(year-1)/400;
//为计算该月1号是星期几求total值
for(i=1;i<month;i++)
days+=monthtab[leap][i];
//计算该年元月1日到该月前的累加天数
firstday=(total+days+1)%7;
//计算该月1号是星期几，输出显示日历表头
printf("************%d***************\n",month);
printf(" Sun Mon Tue Wed Thu Fri Sat\n");
for(number=0;number<firstday;number++)
monthlong[number]=0;//将下标为0~firstday-1的元素设置为零
days=monthtab[leap][month];//取该月的天数
for(number=firstday;number<days+firstday;number++)
monthlong[number]=number-firstday+1;
for(number=days+firstday;number<42;number++)
monthlong[number]=0;
weeks=7; number=0;
for(lines=1;lines<=6;lines++)
{
for(;number<weeks;number++)
{
if(monthlong[number]==0)
printf(" ");
else if(monthlong[number]<10)
printf(" %d",monthlong[number]);
else
printf(" %d",monthlong[number]);
}
printf("\n");
weeks+=7;
}
}
