C input scanf output printf

#include <stdio.h>
#include <string.h>

#define MYNAME "Nautilus"

int globalVar = 100;

main(){
char middleInitial;

printf("wat is your middle initial? ");

scanf(" %c", &middleInitial);

char firstName[30], lastName[30];

printf("What is your name? ");

scanf(" %s %s", firstName, lastName);

printf("Your Name is %s %c %s\n\n", firstName, middleInitial, lastName);

int month, day, year;

printf("What's your birth dat? ");

scanf(" %d%d%d", &month, &day, &year);

printf("\nBirth Date %d%d%d\n\n", month, day, year);
}