基姆拉尔森计算公式(求某年某月某日星期几)

string CaculateWeekDay(int y,int m, int d)

{

if(m==1||m==2) {

m+=12;

y--;

}

int week=(d+2*m+3*(m+1)/5+y+y/4-y/100+y/400+1)%7;

string weekstr="";

switch(week)

{

case 1: weekstr="星期一"; break;

case 2: weekstr="星期二"; break;

case 3: weekstr="星期三"; break;

case 4: weekstr="星期四"; break;

case 5: weekstr="星期五"; break;

case 6: weekstr="星期六"; break;

case 0: weekstr="星期日"; break;

}

return weekstr;

}