🚀 Day 6/150 – Find Remainder of Division in Python

Today we will learn how to find the remainder of a division in Python.

The remainder is the value left after division, and it is commonly used in:

• Even/Odd checks
• Cyclic operations
• Number-based logic

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🧠 Problem Statement

👉 Write a Python program to find the remainder when one number is divided by another.

1️⃣ Using % Operator (Most Common)

The % operator is called the modulus operator, and it gives the remainder.

a = 10
b = 3

remainder = a % b

print("Remainder:", remainder)





Output

Remainder: 1

✔ Simple and widely used
✔ Best method for beginners

2️⃣ Taking User Input

Make the program dynamic using user input.

a = int(input("Enter first number: ")) b = int(input("Enter second number: ")) print("Remainder:", a % b)

✔ Works for any numbers

✔ Useful in real applications

3️⃣ Using a Function

Functions help in writing reusable code.

def find_remainder(x, y):
    return x % y

print(find_remainder(10, 3))

✔ Clean and reusable
✔ Good programming practice

4️⃣ Using divmod() Function

Python provides a built-in function that returns both quotient and remainder.

a = 10
b = 3

quotient, remainder = divmod(a, b)

print("Quotient:", quotient)
print("Remainder:", remainder)

Output

Quotient: 3
Remainder: 1

✔ Efficient
✔ Useful when both values are needed

⚠️ Important Note

Division by zero will cause an error:

print(10 % 0) # ❌ Error

Always handle it safely:

if b != 0:
    print(a % b)
else:
    print("Cannot divide by zero")


🎯 Key Takeaways
Today you learned:

Modulus operator %

Taking user input

Using functions

Using divmod()

Handling division errors