c_kitap

C ve Sistem Programcıları Derneği - C Ders Notları - Necati Ergin
#include
#include
char *days[] = {"Pazar", "Pazartesi", "Sali", "Carsamba", "Persembe",
"Cuma", "Cumartesi"};
int day_of_week(int d, int m, int y)
{
static int t[] = {0, 3, 2, 5, 0, 3, 5, 1, 4,6, 2, 4};
y -= m < 3;
return (y + y / 4 - y / 100 + y / 400 + t[m - 1] + d) % 7;
}
int main(int argc, char **argv)
{
int day, mon, year;
if (argc != 4) {
printf("gun ay ve yil degerini giriniz : ");
scanf("%d%d%d", &day, &mon, &year);
}
else {
day = atoi(argv[1]);
mon = atoi(argv[2]);
year = atoi(argv[3]);
}
printf("%s\n", days[day_of_week(day, mon, year)]);
}
return 0;
449