#include <stdio.h>

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

    const char *months[12] =
    {
        "January",
        "February",
        "March",
        "April",
        "May",
        "June",
        "July",
        "August",
        "September",
        "October",
        "November",
        "December"
    };

    printf("Enter date in the form mm/dd/yyyy: ");
    scanf("%d/%d/%d", &month, &day, &year);

    if (month >= 1 && month <= 12 &&
        day >= 1 && day <= 31)
    {
        printf("%s %d, %d\n",
               months[month - 1],
               day,
               year);
    }
    else
    {
        printf("Invalid date.\n");
    }

    return 0;
}