Numar factorial!

#include <stdio.h>
#include <conio.h>

void main() {
    int n, i, factorial = 1;

    printf("Inserati un numar intreg: \n");
    scanf_s("%d", &n);

    if (n == 0) {
        printf("0! = 1");
    }
    else if (n >= 1) {

        for (i = 1; i <= n; i++) {
            factorial = factorial * i;
        }

        printf("%d!= %d", n, factorial);

    }

    _getch();
}