#include <stdio.h>

int main()
{
   int day,month,year;

    printf("Please enter a date: ");
    scanf("%d.%d.%d",&day,&month,&year);
    if ( (year>=1000) && (year<=3000) && (month>=1) && (month<=12) && (day>=1) ) {
        switch (month) {
            case 1:
                (day>31) ? printf("Invalid date") : printf("January, %d, %d",day,year);
                break;
            case 2:
                (day>28) ? printf("Invalid date") : printf("February, %d, %d",day,year);
                break;
            case 3:
                (day>31) ? printf("Invalid date") : printf("March, %d, %d",day,year);
                break;
            case 4:
                (day>30) ? printf("Invalid date") : printf("April, %d, %d",day,year);
                break;
            case 5:
                (day>31) ? printf("Invalid date") : printf("May, %d, %d",day,year);
                break;
            case 6:
                (day>30) ? printf("Invalid date") : printf("June, %d, %d",day,year);
                break;
            case 7:
                (day>31) ? printf("Invalid date") : printf("July, %d, %d",day,year);;
                break;
            case 8:
                (day>31) ? printf("Invalid date") : printf("August, %d, %d",day,year);
                break;
            case 9:
                (day>30) ? printf("Invalid date") : printf("September, %d, %d",day,year);
                break;
            case 10:
                (day>31) ? printf("Invalid date") : printf("October, %d, %d",day,year);
                break;
            case 11:
                (day>30) ? printf("Invalid date") : printf("November, %d, %d",day,year);
                break;
            case 12:
                (day>31) ? printf("Invalid date") : printf("December, %d, %d",day,year);
        }
    }
    else printf("Invalid date");
    return 0;
}