Tuesday, 25 September 2012

WAP to Find out the day of the entered year.(Gregorian Calender)

  •  According to Gregorian Calender it was Monday on the date 01/01/01.If any year is input through the keyboard. WAP to find out what is the day on 1st January of this Year.
#include<stdio.h>
#include<conio.h>
void main()
{
int y,d=0,i,ch=0;
clrscr();
printf("enter the year");
scanf("%d",&y);
for(i=1990;i<y;i++)
{
if(i%4==0)
d=d+366;
else
d=d+365;
}
ch=d%7;
switch(ch)
{
case 0:
printf("monday");
break;
case 1:
printf("tuesday");
break;
case 2:
printf("wednesday");
break;
case 3:
printf("thursday");
break;
case 4:
printf("friday");
break;
case 5:
printf("saturday");
break;
case 6:
printf("sunday");
break;
defaut:
printf("invalid option");
}
getch();
}


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