int even/odd negative/positive

#include <stdio.h>
typedef enum {
    false,
    true
} Bool;

Bool is_even(int n);

int main(void) {
    int n;

    printf("please enter an integer : ");
    scanf("%d", &n);

    printf("the integer %d is ", n);

    if(is_even(n))
        printf("even and ");

    else
        printf("odd and ");

    if(n < 0)
        printf("negative.\n");

    else
        printf("positive.\n");

    return 0;
}

Bool is_even(int n) {
    int temp;
    temp = n / 2;
    temp = temp * 2;

    if(temp == n)
        return true;

    else
        return false;
}