Hey👋
Friday c++ exam alachu ena as I said earlier Final exam seralew beye nebr esk ahun zm yalekut selala temechegn nebr becha zare mata online alew ena exam abren enseralen enatem bezeyaw le final read eyadergachu yagebachun teteykugnalchu....

I'm currently listening to this song while I'm studying C++ concepts. My goal is to understand them well enough to help u prepare for ur final exams and explain the material clearly. If you need any help, just DM @Technerdguy.

Ahun examochun bedeb ayachew ena sle mn manbebe ende alebachu suggest adergalew🙏

Just endet behone yeshalal just andun exam wesje explain eyaderkugn lesera ?mn yeshalal???

2013 enjemr.....

We will continue tomorrow 🫡

Mebrat hayel zare yelel nw yechekenut still esk ahun alemetam selki demo lezega nw😭😭😭😭😭😭

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Ahun mebrat metewal😊

Sorry Guys esk ahun connection enbi belogn nw🙏

Ymr bezum negr cover adergalew beye nebr bezi lay video hulu sle pattern be loop prepare aderg nebr connection gn yelel nw meyazegew almost telegram eyeseralegn adelm😭

I tried my best to explain it. If it is good, tell me, and I'll post the next part.

Pointer

✅What is a Pointer
- A pointer is a variable that stores the memory address of another variable.

-Think of it like a library catalog card that points to the location of a book (data) rather than containing the book itself.


✅Pointer Basics
Declaration & Initialization

int x = 10;       // Variable  
int *ptr = &x;     // Pointer storing address of x  

- &x → Gets the address of x (e.g., 0x7ffd4abc).
- *ptr → Accesses the value at that address (10).

✅Visualization
| Variable (x)| Pointer (ptr) |
|------------------|-------------------|
| Value: 10 | Stores: 0x7ffd4abc |
| Address: 0x7ffd4abc | Points to x |


✅Key Pointer Operations
a) Accessing Values

cout << *ptr;  // Output: 10  

b) Modifying Values

*ptr = 20;     // Changes x to 20  

c) Pointer Arithmetic (Arrays)

int arr[3] = {10, 20, 30};  
int *p = arr;      // Points to arr[0]  
cout << *(p + 1);  // Output: 20 (arr[1])  

✅Why Use Pointers?
Efficiency: Avoid copying large data (pass addresses instead).

Dynamic Memory: Allocate memory at runtime (e.g., new/delete).

Modify Variables in Functions:

   void increment(int *p) { (*p)++; }  
   increment(&x); // x increases by 1  
   

✅Practice Exercise
What’s the output?

int a = 5, b = 10;  
int *p = &a;  
*p = b;  
cout << a;  

Answer Output: 10 (Pointer p modifies a’s value).