What You'll Learn
- •Understanding absolute value conceptually
- •Using simple conditionals to implement math rules
- •Working with negative and positive numbers
Python
# Program to find the absolute value of a number
num = float(input("Enter a number: "))
if num < 0:
abs_value = -num
else:
abs_value = num
print("Absolute value of", num, "is", abs_value)Output
Enter a number: -7 Absolute value of -7.0 is 7.0
The absolute value of a number is its distance from zero on the number line.
- If num < 0 → abs(num) = -num
- Else → abs(num) = num
This shows how to reimplement a built-in idea using basic conditionals.
Step-by-Step Breakdown
- 1Read a number from the user.
- 2Check if it is negative.
- 3If negative, multiply by -1 to make it positive.
- 4Otherwise, keep it as is.
- 5Print the result.