Check a Number is Positive or Negative in c

#include <stdio.h>
int main() {

    double num;
  printf("Enter your number: \n");
    scanf("%lf", &num);

    if (num <= 0.0) {
      if(num == 0.0) {
        printf("Your number is zero \n");
        }
        else {
          printf("Your number is negative \n");
        }
      }
        else {
          printf("Your number is positive \n");
        }

return 0;

}