Program to check if a number is Positive, Negative, Odd, Even, Zero?

In this article, we are going to learn how to check if the number is positive, negative, odd, even, or zero. Identifying and categorizing a number based on its characteristics is a basic operation. A number can fall into multiple categories:

• Positive: A number is greater than 0.
• Negative: A number less than 0.
• Zero: The number that is equal to 0.
• Even: The number that is divisible by 2.
• Odd: The number that is not divisible by 2.

Let's dive into the article to get more ideas about these classifications.

Using if, else Statements

The Python if, else statements are the conditional statements that are used to execute a block of code when the condition in the if statement is true, and another block of code when the condition is false.

Syntax

Following is the syntax of the Python if-else statement -

if:
   .......
else:
    ......

Using Modulus (%) Operator

The Python modulus operator is also called the remainder operator because it is used to return the remainder of the division of two numeric operands. Following is the syntax of the Python modulus operator -

x = a % b

Example 1

Let's look at the following example, where we are going to consider the number 4 and check whether it is positive, negative, odd, even, or zero.

def demo(num):
    if num == 0:
        print("It is Zero.")
    else:
        if num > 0:
            print("It is Positive.")
        else:
            print("It is Negative.")
        if num % 2 == 0:
            print("It is Even.")
        else:
            print("It is Odd.")
demo(4)

The output of the above program is as follows -

It is Positive.
It is Even.

Example 2

Consider another scenario, where we are going to consider the number -3 and check whether it is positive, negative, odd, even, or zero.

def demo(num):
   if num == 0:
      print("It is Zero.")
   else:
      if num > 0:
         print("It is Positive.")
      else:
         print("It is Negative.")
      if num % 2 == 0:
         print("It is Even.")
      else:
         print("It is Odd.")
demo(-3)

The output of the above program is as follows -

It is Negative.
It is Odd.