🚀 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
🎯 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 |
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