int whenDate(Date d1, Date d2)
{
if (validMonth(d1) == -1 || validDay(d1) == -1 || validYear(d1) == -1)
return -2; //returns -2 if one of the dates are invalid
if (validMonth(d2) == -1 || validDay(d2) == -1 || validYear(d2) == -1)
return -2;
if (d1.year > d2.year)
return 1;
else if (d1.year < d2.year)
return -1;
else if (d1.year == d2.year)
{
if (d1.month > d2.month)
return 1;
else if (d1.month < d2.month)
return -1;
else if (d1.month == d2.month)
{
if (d1.day > d2.day)
return 1;
else if (d1.day < d2.day)
return -1;
else if (d1.day == d2.day)
return 0;
}
}
}
int validTimeDate(int day, char* month, int year) {
int m;
if((m = validMonth(month)) != 0) {
if(day >= 1 && day <= daysMonth(m, year))
return 1;
}
return 0;
}
int main (int argc, char *argv[])
{
int date;
char input[10];
char mon[10];
int monidx;
int year;
int days;
int isleap;
int total;
// obtain a year
printf("Enter the year(empty line to quit): ");
while(fgets(input, 10, stdin) != NULL && input[0] != '\n') {
if (!isdigit(input[0])) {
printf("%s is not a valid year. Enter the year again(empty line to quit): ", input);
continue;
}
year = atoi(input);
// check if that year is a leap year
isleap = leapYear(year);
// obtain a valid month
printf ("Enter the month (number, name or abbreviation): ");
int f;
while(fgets(mon, 10, stdin) == NULL || input[0] == '\n' || !(validMonth(monidx = standard(mon)))) {
printf("Not a valid input, enter the month (number, name or abbreviation): ");
// printf("%d\n",f);
}
// printf("%d\n",f);
// transfer the input to month idx
// monidx = standard(mon);
// obtain a valid date
// days = obtainDays(monidx);
printf("Enter the date (1-%d): ",obtainDays(monidx));
while(scanf("%d", &date) <= 0) {
if (isleap && monidx == 2) {
printf("Not a valid date, please input a valid date(1-29): ");
}
printf("Not a valid date, please input a valid date(1-%d): ", obtainDays(monidx));
}
// calculate the days
total = calTotal(monidx, date, isleap);
// print the results
if (total) {
int lastDigit = date % 10;
if (lastDigit == 1) {
printf("There are %d day(s) through %s %dst from begining of %d.\n", total, months[monidx].name, date, year);
}
else if(lastDigit == 2) {
printf("There are %d day(s) through %s %dnd from begining of %d.\n", total, months[monidx].name, date, year);
}
else if (lastDigit == 3) {
printf("There are %d day(s) through %s %drd from begining of %d.\n", total, months[monidx].name, date, year);
}
else
printf("There are %d day(s) through %s %dth from begining of %d.\n", total, months[monidx].name, date, year);
}
else
printf("Oops, I ate too much today.\n");
while(getchar() != '\n')
continue;
// Do it again
printf("Enter the year(empty line to quit): ");
}
return 0;
}