🚀 Day 27/150 – Print Even Numbers up to N in Python

 

🚀 Day 27/150 – Print Even Numbers up to N in Python

Printing even numbers up to N is a great way to understand loops, conditions, and number patterns in Python.

👉 An even number is any number divisible by 2.

Let’s explore different approaches 👇

🔹 Method 1 – Using for Loop

The most efficient and recommended method.

n = 10 for i in range(2, n + 1, 2): print(i)

✅ Explanation:

• Starts from 2
• Increments by 2
• Directly prints only even numbers

🔹 Method 2 – Using Condition inside Loop

Check each number manually.

n = 10 for i in range(1, n + 1): if i % 2 == 0: print(i)

✅ Explanation:

• % 2 == 0 checks if a number is even
• Prints only when condition is true

🔹 Method 3 – Taking User Input

Make your program dynamic.

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

for i in range(2, n + 1, 2):
    print(i)



🔹 Method 4 – Using while Loop
A condition-based approach.
n = 10
i = 2

while i <= n:
    print(i)
    i += 2




✅ Explanation:
Starts from 2

Runs until i <= n

Increments by 2

🎯 Final Thoughts

Best approach: range(2, n+1, 2) ✅

Condition method builds logic understanding 🧠

while loop helps with control-based problems 🔄