DAY 3 OF PYTHON NOTES

 DAY 3 OF PYTHON NOTES 

🔹 1. Conditional Statements (if, elif, else)

✅ Basic Structure:

python
if condition:
    # code block
elif another_condition:
    # another block
else:
    # fallback block

📌 Example:

python
age = 18
if age >= 18:
    print("You are an adult.")
elif age >= 13:
    print("You are a teenager.")
else:
    print("You are a child.")

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🔹 2. Comparison Operators

Operator	Meaning
==	Equal to
!=	Not equal to
>	Greater than
<	Less than
>=	Greater than or equal
<=	Less than or equal

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🔹 3. Logical Operators

Operator	Meaning	Example
and	True if both conditions	a > 5 and a < 10
or	True if one is true	a < 5 or a > 15
not	Negates the condition	not(a == b)

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🔹 4. Practice Problems

1. Check if a number is even or odd.

python
num = int(input("Enter a number: "))
if num % 2 == 0:
    print("Even")
else:
    print("Odd")

2. Check if a number is positive, negative, or zero.

python
num = int(input("Enter a number: "))
if num > 0:
    print("Positive")
elif num < 0:
    print("Negative")
else:
    print("Zero")

3. Find greater of two numbers.

python
a = int(input("Enter a: "))
b = int(input("Enter b: "))
if a > b:
    print("A is greater")
else:
    print("B is greater or equal")

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🔹 5. Intro to Loops: while Loop

✅ Syntax:

python
while condition:
    # code block

📘 Example:

python
i = 1
while i <= 5:
    print(i)
    i += 1
                                                                               BY-ABHITECH