Write a Python program that asks the user to enter a number and then prints whether the number is positive, negative, or zero.

 

num = int(input("Enter a number: "))

if num > 0:

    print("The number is positive.")

elif num < 0:

    print("The number is negative.")

else:

    print("The number is zero.")

#source code --> clcoding.com 

Step-by-Step Explanation

Taking Input from the User

num = int(input("Enter a number: "))

The program asks the user to enter a number using input().

The input() function takes input as a string, so we use int() to convert it into an integer.

Now, the number is stored in the variable num.

Example Inputs & Stored Values:

If the user enters 5, then num = 5

If the user enters -3, then num = -3

If the user enters 0, then num = 0

Checking the Number using if Statement

if num > 0:

    print("The number is positive.")

The if statement checks if num is greater than 0.

If true, it prints:

The number is positive.

Otherwise, it moves to the next condition.

Example:

If the user enters 8, num > 0 is True, so the program prints:

The number is positive.

Checking the Number using elif Statement

elif num < 0:

    print("The number is negative.")

If the first condition (if num > 0) is False, Python checks this condition.

The elif statement checks if num is less than 0.

If true, it prints:

The number is negative.

Example:

If the user enters -5, num < 0 is True, so the program prints:

The number is negative.

Handling the Case where the Number is Zero (else Statement)

else:

    print("The number is zero.")

If num is not greater than 0 and not less than 0, that means it must be zero.

So, the program prints:

The number is zero.