Wether Negative, Positive, Zero

#include<stdio.h>
int main()
{
    double A, B;
    scanf("%lf", &A);
    if(A==0)
    {
        printf("There is Zero Number");
    }
    else if(A>0)
    {
        printf("There is Positive Number");
    }
    else
    {
        printf("There is Negative Number");
    }

    return 0;
}