A programme in C++ that if date is input it tells day?

For example
Enter Date : 1-01-1985
The day is 'Monday'

Enter Date : 2-01-1985
The day is 'Tuesday'

Restriictions are using If-else, switch,operators(/,%,*,+,-) while loop.logical operations(&& || )
Please write the programme or Explain the logic
It starts like this.
if (year%4==0)
"it is leap year"
Then what?????
PLEASE HELP.
THIS IS MY FINAL DESTINATION.If no answer from here. I won't find it how to do!!!
I have only one day!!!!!!!!!!
PLEASE!PLEASE!!!!!!!!!
PLEASE WRITE CALCULATIONS AND LOGIC.
Thanx.

Have it calculate the # of days from a certain date: Jan, 1 1900 works well for this purpose. Have it account for leap years. The modulo of that number from seven will give you the start day of that month and you can find the day from there.

this is the code i made?
Please check and remove errors.
Thanx

I took formula from this site.
http://mathforum.org/dr.math/faq/faq.calendar.html


#include<iostream.h>
#include<conio.h>
void main()
{ clrscr();
int d,m,y1,y2,f,day,y;
char v='/',v2='-';
cout<<"\n\n\nEnter the date please in this format eg(25/06/20-08) ";
cin>>d>>v>>m>>v>>y1>>v2>>y2;
y=y2-1;
f=d+(((13*m)-1)/5)+y+(y/4)+(y1/4)-2*y1;
day=f%7;
if(day<0)
{
day2=(-1*day)+(-1*day);


if(day==0)
cout<<" THE DAY IS **** SUNDAY **** ";
else
if(day==1)
cout<<" THE DAY IS **** MONDAY **** ";
else
if(day==2)
cout<<" THE DAY IS **** TEUSDAY **** ";
else
if(day==3)
cout<<" THE DAY IS **** WEDNEDAY **** ";
else
if(day==4)
cout<<" THE DAY IS **** THURSDAY **** ";
else
if(day==5)
cout<<" THE DAY IS **** FRIDAY **** ";
else
if(day==6)
cout<<" THE DAY IS **** SATURDAY **** ";

/*else
if(day<0)
{
day2=(-1*day)+(-1*day);
if(day2==0)
cout<<" THE DAY IS **** SUNDAY **** ";
else
if(day2==1)
cout<<" THE DAY IS **** MONDAY **** ";
else
if(day2==2)
cout<<" THE DAY IS **** TEUSDAY **** ";
else
if(day2==3)
cout<<" THE DAY IS **** WEDNEDAY **** ";
else
if(day2==4)
cout<<" THE DAY IS **** THURSDAY **** ";
else
if(day2==5)
cout<<" THE DAY IS **** FRIDAY **** ";
else
if(day2==6)
cout<<" THE DAY IS **** SATURDAY **** ";*/


getch();
}

Here is your code, cleaned up (I haven't tested it, but it should compile)

Hope this helps

Yes, it compiles. Compiler only says that it would be better to use _getch().

This post has been edited by skater_00: 17 May, 2008 - 03:31 PM