int is_leap_year( int year )
{
int iRet;
iRet = 0;
if( 0 == ( year % 400 ) )
{
iRet = 1;
}
else if( ( 0 == ( year % 4 ) ) && ( 0 != ( year % 100 ) ) )
{
iRet = 1;
}
return( iRet );
}
int get_week( int year,int month,int day )
{
int iWeek, iConst, iYear;
int aiRate[13] = { 0, 0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5 };
iYear = year % 400;
if(is_leap_year( year ) && ( month < 3 ) )
{
iConst = 5;
}
else
{
iConst = 6;
}
iWeek = ( iYear + iYear / 4 - iYear / 100 + aiRate[month] + day + iConst ) % 7;
return( iWeek );
}
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