switch case : find the Date

find the Date 

#include<stdio.h>
int main()
{
    int month,day,year;
    printf("Enter date (mm/dd/yy) :\n");
    while(scanf("%d%d%d",&month,&day,&year)==3)
    {

        printf("Dated is : %d",day);

        switch(day)
        {
        case 1:
        case 21:
        case 31:
            printf("st");
            break;
        case 2:
        case 22:
            printf("nd");
            break;
        case 3:
        case 23:
            printf("rd");
            break;
        default:
            printf("th");
            break;
        }
        printf(" day of ");
        switch (month)
        {
        case 1:
            printf("January");
            break;
        case 2:
            printf("February");
            break;
        case 3:
            printf("March");
            break;
        case 4:
            printf("April");
            break;
        case 5:
            printf("May");
            break;
        case 6:
            printf("June");
            break;
        case 7:
            printf("July");
            break;
        case 8:
            printf("August");
            break;
        case 9:
            printf("September");
            break;
        case 10:
            printf("October");
            break;
        case 11:
            printf("November");
            break;
        case 12:
            printf("December");
            break;
        }
        printf("  %d\n",year);

    }

    return 0;
}