Python Program to Check if a Number is Positive , Negative or 0

Source Code : Using if...elif...else

num = float (input("Enter a number: "))
if num > 0 :
      print("Positive number")
elif num == 0:
     print('Zero")
else:
   print("Negative number ")

Output

Enter a number : 2
Positive number


Source Code : Using Nested if

num = float(input("Enter a number"))
if num >= 0:
     if num == 0:
             print("Zero")
   else:
            print("Positive number")
else:
   print("Negative number")

Output

Enter a number: 0
Zero