Sample C Program to convert given number of days to a measure of time given in years, weeks and days.

For example 375 days is equal to 1 year 1 week and 3 days (ignore leap year).

# include <stdio.h>
#define DAYSINWEEK 7

void main()

{
    int ndays, year, week, days;
    printf("Enter the number of daysn");
    scanf("%d", &ndays);
    year = ndays / 365;
    week =(ndays % 365) / DAYSINWEEK;
    days =(ndays % 365) % DAYSINWEEK;
    printf ("%d is equivalent to %d years, %d weeks and %d days", ndays, year, week, days);
}


Output:

Enter the number of days
29
29 is equivalent to 0 years, 4 weeks and 1 days

Enter the number of days
1000
1000 is equivalent to 2 years, 38 weeks and 4 days