🚀 Day 11/150 – Find the Largest of Three Numbers in Python

Welcome back to the 150 Days of Python series!
Today, we’re leveling up from two numbers to three numbers 🔥

Finding the largest among three numbers helps you understand:

• Multiple conditions
• Logical comparisons
• Cleaner coding approaches

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🎯 Problem Statement

Write a Python program to find the largest of three numbers.

✅ Method 1 – Using if-elif-else

The most common and beginner-friendly approach.

a = 10 b = 25 c = 15 if a > b and a > c: print("Largest number is:", a) elif b > c: print("Largest number is:", b) else: print("Largest number is:", c)

👉 Explanation:

We compare all three values step by step to determine the largest.

✅ Method 2 – Taking User Input

Make your program interactive.

a = float(input("Enter first number: "))
b = float(input("Enter second number: "))
c = float(input("Enter third number: "))

if a > b and a > c:
    print("Largest number is:", a)
elif b > c:
    print("Largest number is:", b)
else:
    print("Largest number is:", c)

👉 Why this matters:
User input makes your program practical and real-world ready.

✅ Method 3 – Using a Function

Reusable and clean solution.

def find_largest(x, y, z): if x > y and x > z: return x elif y > z: return y else: return z print("Largest number:", find_largest(10, 25, 15))

👉 Pro Tip:

Functions help you organize and reuse your logic efficiently.

✅ Method 4 – Using Nested Conditions

Another way using nested if statements.

a = 10 b = 25 c = 15 if a > b: if a > c: print("Largest number is:", a) else: print("Largest number is:", c) else: if b > c: print("Largest number is:", b) else: print("Largest number is:", c)

👉 Use Case:
Helps understand deeper conditional structures.

🧠 Summary

Method	Best For
if-elif-else	Beginners
User Input	Real-world use
Function	Reusability
Nested if	Logical understanding