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Displaying  Source Code(s)  
 

 
Program to find your Day of Birth given Date of Birth.

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

Description : Gives exact day of birth if you are born anywhere in the 20th century. Also works fine for previous centuries and future centuries.


#include<stdio.h>
#include<stdlib.h>
#include<conio.h>

main()
{
clrscr();
int d,m,y,year,month,day,i,n;
printf("Enter how many times you want to run this program : ");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
printf("

Enter the date : ");
scanf("%d%d%d",&d,&m,&y);
if( d>31 || m>12 || (y<1900 || y>=2000) )
{
printf("

INVALID INPUT<BR>);
getch();
exit(0);
}
year = y-1900;
year = year/4;
year = year+y-1900;
switch(m)
{
case 1:
case 10:
month = 1;
break;
case 2:
case 3:
case 11:
month = 4;
break;
case 7:
case 4:
month = 0;
break;
case 5:
month = 2;
break;
case 6:
month = 5;
break;
case 8:
month = 3;
break;
case 9:
case 12:
month = 6;
break;
}
year = year+month;
year = year+d;
day = year%7;
switch(day)
{
case 0:
printf("

Day is SATURDAY<BR>);
break;
case 1:
printf("

Day is SUNDAY<BR>);
break;
case 2:
printf("

Day is MONDAY<BR>);
break;
case 3:
printf("

Day is TUESDAY<BR>);
break;
case 4:
printf("

Day is WEDNESDAY<BR>);
break;
case 5:
printf("

Day is THURSDAY<BR>);
break;
case 6:
printf("

Day is FRIDAY<BR>);
break;
}
}
getch();
return 0;
}
 

 

 

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