Question: Sub-Task : Write a function: int julian_date(int day, int month, int year); This function is given the day, month and year and returns the Julian
Sub-Task: Write a function:
int julian_date(int day, int month, int year);
This function is given the day, month and year and returns the Julian date. The Julian date is the ordinal day number for that day. For example, 1 Jan is day 1 of any year, 31 Dec is day 365 for any non-leap year and 1 Feb is day 32 for any year. Use your days_in_month() function from the previous problem to calculate the Julian date. Put the code for the function julian_date() in the file julian.c, and the prototype in the file julian.h
Write a driver, main(), which asks the user to enter a month, day, year and prints the Julian date. Terminate with EOF. Put the driver in the file driver3.c. You will compile this program with the command:
make driver3
which will create an executable called driver3.
This first code tells whether the year is a leap year or not
*/
/* this is function taking the year given and returning ir its the leap year * or not */ #include
int is_leap(int year) { int leap;
leap = year % 400;
#ifdef debug printf("debug: leap /400 = %d", leap); #endif
if (leap == 0) { printf("True "); } else { leap = year % 4; #ifdef debug printf("debug: leap /4 = %d ", leap); #endif
if (leap == 0) { leap = year % 100; #ifdef debug printf("debug: leap /100 = %d ", leap); #endif
if (leap == 0) { printf("False "); } printf("True "); } else { printf("False "); }
}
}
The second code tells how many ordinal days there are when inputted the month and day of that month
/* A program to find number of days given a month and year */
#include
int main()
{
int days_in_month(int month, int year);
int month; /* month */
int year; /* year */
int flag; /* result of scanf flag */
/* Enter month and year */
printf("Enter a month and year(EOF to quit): ");
flag = scanf("%d%d", &month, &year);
/* While there are more months and years to check */
while (flag !=EOF)
{
/* when month is january, march, may, july, august, october, december */
if (month == 1)
{
printf("31 days ", month);
}
else if(month == 3)
{
printf("31 days ", month);
}
else if(month == 5)
{
printf("31 days ", month);
}
else if(month == 7)
{
printf("31 days ", month);
}
else if(month == 8)
{
printf("31 days ", month);
}
else if(month == 10)
{
printf("31 days ", month);
}
else if(month == 12)
{
printf("31 days ", month);
}
/* when month is april, june, september, or november */
else if(month == 4)
{
printf("30 days ", month);
}
else if(month == 6)
{
printf("30 days ", month);
}
else if(month == 9)
{
printf("30 days ", month);
}
else if(month == 11)
{
printf("30 days ", month);
}
/* if month is february */
if (month == 2)
{
if
(year%4 ==0)
{
if
(year%100 ==0)
{
/* if leap year */
if
(year%400 ==0)
printf("29 days ", month, year);
/* if not leap year */
else
printf("28 days ", month, year);
}
else
printf("29 days ", month, year);
}
else
printf("28 days ", month, year);}
/* Enter month and year */
printf("Enter a month and year(EOF to quit): ");
flag = scanf("%d%d", &month, &year);
}
}
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