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What will be the output?
age = 20
if age >= 18: print("Adult") else: print("Minor")
Anonymous Quiz
87%
Adult
13%
Minor
๐Ÿ‘3
What will be the output?
x = 10

if x > 5 and x < 10:
print("Yes")
else:
print("No")


A) Yes โค๏ธ
B) No ๐Ÿ‘
๐Ÿ‘78โค10
What will be the output?
marks = 85
if marks >= 90: print("A") elif marks >= 80: print("B") else: print("C")
Anonymous Quiz
17%
A
75%
B
9%
C
What will be the output?
x = 5
if not x > 10: print("Yes") else: print("No")
Anonymous Quiz
57%
Yes
43%
No
What will be the output?
x = 15
if x > 10: if x < 20: print("A") else: print("B") else: print("C")
Anonymous Quiz
65%
A
23%
B
13%
C
โค3
๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ ๐—ฃ๐—ผ๐˜„๐—ฒ๐—ฟ ๐—•๐—œ ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜! ๐Ÿ”ฅ

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โค3
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โค1๐Ÿ”ฅ1
๐ŸงฉNow, Let's Understand Functions in Programming ๐Ÿ‘จโ€๐Ÿ’ป๐Ÿ”ฅ

After variables, operators, conditions, and loops, the next important concept is functions.

Functions help you organize code, avoid repetition, and make programs easier to understand and maintain.

๐Ÿง  1. What is a Function?

A function is a reusable block of code designed to perform a specific task.

Instead of writing the same code repeatedly, you can put it inside a function and call it whenever you need it.

For example:
def greet():
    print("Hello!")

greet()

Output:
Hello!

๐ŸŽฏ 2. Why Do We Use Functions?

Functions help with:

โœ” Code reusability

โœ” Better organization

โœ” Easier debugging

โœ” Readability

โœ” Maintaining large programs 

A good function usually focuses on one clear task.

๐Ÿ“ฅ 3. Function Parameters

Functions can accept information from the code that calls them.
def greet(name):
    print("Hello", name)

greet("Alex")

Output:
Hello Alex

Here, "name" is a parameter.

"Alex" is the argument passed to the function.

๐Ÿ“ค 4. Returning a Value

A function can return a result instead of directly displaying it.
def add(a, b):
    return a + b

result = add(10, 5)
print(result)

Output:
15

"return" sends the result back to the place where the function was called.

๐Ÿ”„ 5. Parameters vs Arguments

These two terms are often confused.

In:
def add(a, b):
    return a + b

"a" and "b" are parameters.

In:
add(10, 5)

"10" and "5" are arguments.

Parameter โ†’ Variable defined by the function

Argument โ†’ Actual value passed to the function 

โš™๏ธ 6. Default Parameters

A function can have a default value for a parameter.
def greet(name="Guest"):
    print("Hello", name)

greet()
greet("Alex")

Output:
Hello Guest
Hello Alex

If no argument is provided, the default value is used.

๐ŸŒ 7. Functions in Different Languages

The syntax changes between languages, but the concept remains similar.

Python
def add(a, b):
    return a + b

JavaScript
function add(a, b) {
    return a + b;
}

Java
static int add(int a, int b) {
    return a + b;
}

C++
int add(int a, int b) {
    return a + b;
}

The purpose is the same: define reusable logic that can be called when needed.

๐Ÿง  8. Local Variables

A variable created inside a function is generally local to that function.
def calculate():
    result = 100
    print(result)

calculate()

Here, "result" belongs to the function's local scope.

Understanding scope becomes especially important as programs become larger.

๐Ÿ” 9. Functions Can Call Other Functions

One function can use another function.
def add(a, b):
    return a + b

def show_result():
    result = add(10, 20)
    print(result)

show_result()

This allows larger programs to be broken into smaller, manageable pieces.

๐Ÿงฉ 10. Functions and Loops

Functions and loops are often used together.
def print_numbers():
    for i in range(1, 6):
        print(i)

print_numbers()

The function organizes the task, while the loop handles repetition.

๐Ÿ”ฅ Double Tap โค๏ธ For More
โค12
๐ŸŽ“ ๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐˜„๐—ถ๐˜๐—ต ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ฒ๐˜€! ๐Ÿš€๐Ÿ”ฅ

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โค1
๐Ÿš€ ๐—ช๐—ต๐—ถ๐—ฐ๐—ต ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น ๐—ช๐—ถ๐—น๐—น ๐—ฌ๐—ผ๐˜‚ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฒ?

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