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#include
#include
#include
#include void ff(char c, int n); //星号函数
int weekn(int yeah); //返回年份的一月一日是星期几
bool yeah_run(int yeah); //判断是否是闰年
int chariqi(int mon[12], int yeah, int yue, int ri); //查找日期函数
char xingqi(int xin); //查找日期是星期几 int main (void)
{
while(1){
int mon[12]={31,28,31,30,31,30,31,31,30,31,30,31};
int i,j, n=0, week;
int yeah, yue, ri;
puts("请输入需要打印的年份(不要早于1980年)");
scanf("%d", &yeah); system("cls");
if(yeah_run(yeah))
mon[1] = 29;
week = weekn(yeah);
ff('*', 18);
printf("%d年年历", yeah);
ff('*', 18);
putch('\n'); for(j=0; j<12; j++)
{
n=0;
putch('\n');
ff('*', 20);
printf("第%d月", j+1);
ff('*', 20);
puts("\n");
puts("星期日 星期一 星期二 星期三 星期四 星期五 星期六");
while(n
{
if(7==week)
{
week=0;
break;
}
printf(" ");
n++;
}
for(i=0; i
{
if(7==week)
{
putch('\n');
week = 0;
}
printf("%-7d", i+1);
week++;
}
}
puts("\n");
do
{
puts("请输入需要查找的月份");
scanf("%d", &yue);
puts("请输入需要查找的日期");
scanf("%d", &ri);
if(yue>12 || ri >mon[yue-1])
{
puts("您输入的日期有误，请重新输入");
}
else
break;
}
while(1);
printf("您需要查的日期是:\n%d年%d月%d日\t", yeah, yue, ri);
switch(chariqi(mon, yeah, yue, ri))
{
case 0: puts("星期日"); break;
case 1: puts("星期一"); break;
case 2: puts("星期二"); break;
case 3: puts("星期三"); break;
case 4: puts("星期四"); break;
case 5: puts("星期五"); break;
case 6: puts("星期六"); break;
default : break;
}
while(getchar()!='\n')
continue;
getch();
system("cls");
}
return 0;
}
void ff(char c, int n)
{
int i=0;
while(i
{
printf("%c", c);
i++;
}
return ;
}
int weekn(int yeah)
{
int sum =0;
int i,j;
i = yeah - 1980;
if(0==i)
return 2; j = (i-1) / 4 +1;
return (i*365+j+2)%7;
}
bool yeah_run(int yeah)
{
if(0==yeah%4 && 0!=yeah%100 || 0==yeah%400)
return true;
else
return false;
}
int chariqi(int mon[12], int yeah, int yue, int ri)
{
int duoyutian = weekn(yeah);
int i, j, sum =0;
if(yeah_run(yeah))
{
mon[1]=29;
}
for(i=0; i
sum = sum + mon[i];
sum = sum + ri +duoyutian; return sum%7-1;
}
