#include 
int main (void)
{
	int year, day, month, home, date, gate;


	printf("Please enter your Date:");
	scanf("%d %d %d", &year, &month, &day);
	home=(((year-1)*365)+((year-1)/4)-((year-1)/100)+((year-1)/400))%7;

switch (month-1)
{
case 11: date=31+28+31+30+31+30+31+31+30+31+30;
break;
case 10: date=31+28+31+30+31+30+31+31+30+31;
break;
case 9: date=31+28+31+30+31+30+31+31+30;	
break;
case 8: date=31+28+31+30+31+30+31+31;
break;
case 7: date=31+28+31+30+31+30+31;	
break;
case 6: date=31+28+31+30+31+30;	
break;
case 5: date=31+28+31+30+31;	
break;
case 4: date=31+28+31+30;	
break;
case 3: date=31+28+31;	
break;
case 2: date=31+28;	
break;
case 1: date=31;
break;
default: date=0;
break;
}
if (((!(year%4)&&(year%100))||!(year%400)) && (month>2))
{date=date+1;}
    gate=(date+home+day)%7;
switch (gate)
{
case 0: printf("Your enter day is Sunday~");
break;
case 6: printf("Your enter day is Saturday~");
break;
case 5:	printf("Your enter day is Friday~");
break;
case 4:printf("Your enter day is Thursday~");
break;
case 3:printf("Your enter day is Wednesday~");
break;
case 2:printf("Your enter day is Tuesday~");
break;
case 1:printf("Your enter day is Monday~");
break;
default: gate=0;
break;
}
	return 0;
}


-------------------------------------------------------------------------





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int a,b;
	printf("Waht are you doing now?");
	scanf("%d", &a);
    printf("\nYou are doing %d", a);
	int getchar();
	
	return 0;

    Source: geocities.com/hk/ccasstkd2000

               ( geocities.com/hk)