C PROGRAM TO CHECK WHETHER A NUMBER IS POSITIVE OR NEGATIVE

#include <stdio.h>

int main() {

    double num;

    printf("Enter a number: ");

    scanf("%lf", &num);

    if (num <= 0.0) {

        if (num == 0.0)

            printf("You entered 0.");

        else

            printf("You entered a negative number.");

    } else

        printf("You entered a positive number.");

    getch();

}