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Contents
Check if a Number is Positive or Negative
To check if a given number is positive or negative, we can use relational operators like greater-than, less-than and compare it with zero. If the given number is greater than zero, then it is a positive number, or if less than zero, then it is a negative number, or else, the given number is a zero.
Example
In this example, we write a function to read a number from user, and check if the number is positive or negative.
Python Program
n = int(input('Enter a number : '))
if n > 0:
print(n, 'is a positive number.')
elif n < 0:
print(n, 'is a negative number.')
else:
print(n, 'is zero.')
CopyOutput #1
Enter a number : 4
4 is a positive number.
Output #2
Enter a number : -3
-3 is a negative number.
Output #3
Enter a number : 0
0 is zero.
Summary
In this Python Examples tutorial, we learned how to check if given number is positive or negative using relational operators, and if-elif-else statement.