📘 Day 3: Basic Arithmetic & Input/Output in Python
Let’s build the foundation of your programming skills with math operations and user input handling!

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🔢 Basic Arithmetic Operations

print(5 + 3)    # Addition → 8
print(10 - 4)   # Subtraction → 6
print(7 * 2)    # Multiplication → 14
print(15 / 3)   # Division → 5.0
print(15 // 2)  # Floor Division → 7
print(15 % 4)   # Modulus → 3
print(2 ** 3)   # Exponentiation → 8

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🧮 Order of Operations (PEMDAS)

print(2 + 3 * 4)      # Output: 14
print((2 + 3) * 4)    # Output: 20

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🗣 User Input and Output

name = input("What is your name? ")
print("Hello, " + name + "!")

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### 🔁 Convert Input to Numbers

num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))
print("Sum:", num1 + num2)

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✅ Practice Problems

1️⃣ Area of a Rectangle

length = float(input("Enter length: "))
width = float(input("Enter width: "))
area = length * width
print("Area:", area)

2️⃣ Square of a Number

num = int(input("Enter a number: "))
print("Square:", num ** 2)

3️⃣ Basic Arithmetic Calculator

num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))

print("Addition:", num1 + num2)
print("Subtraction:", num1 - num2)
print("Multiplication:", num1 * num2)
print("Division:", num1 / num2)

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🎯 Goal for Day 3
✅ Use Python’s arithmetic operators confidently
✅ Understand input/output with input() and print()
✅ Practice writing small interactive programs

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👨‍💻 Keep coding! Day 4 coming soon...
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