can someone tell me what those %7 and %4 means?
I've tried solving it using calculator but my answers are really different from this code?
#include<stdio.h>
main ()
{
int year=1996, daycode;
daycode=((year-1)*365+((year-1)/4)-((year-1)/100)+((year-1)/400)+1)%7;
printf("%d",daycode);
}and also this one
#include<stdio.h>
main ()
{
int year=1996, leapyear;
leapyear=(!(year%4)&&(year%100))||!(year%4);
printf("%d",leapyear);
}