C++ ek bahut hi powerful aur popular General-purpose Programming Language hai. Ise Bjarne Stroustrup ne 1979 mein "C with Classes" ke naam se develop karna shuru kiya tha.

Yahan C++ ka aasaan aur basic introduction diya gaya hai:

1. C++ Kya Hai? (परिचय)

C++, purani C language ka ek advanced version hai. Iski sabse badi khasiyat ye hai ki ye Object-Oriented Programming (OOP) ko support karti hai. Iska matlab hai ki isme real-world cheezon (objects) ke hisab se coding ki jati hai.

2. C++ ki Khasiyat (Key Features)

  • Fast aur Powerful: C++ low-level memory manipulation allow karti hai, isliye ye bahut fast chalti hai.

  • Object-Oriented (OOP): Isme Classes, Objects, Inheritance aur Polymorphism jaise concepts hote hain jo bade projects ko manage karna asaan banate hain.

  • Case Sensitive: Isme Apple aur apple do alag-alag cheezein mani jayengi.

  • Portable: C++ mein likha gaya code alag-alag platforms (Windows, Linux, Mac) par chalaya ja sakta hai.


3. C++ Kahan Use Hoti Hai? (Applications)

C++ ka istemal aisi jagahon par hota hai jahan speed aur performance bahut zaroori ho:

  1. Operating Systems: Windows aur Mac OS ke kai hisse C++ mein likhe gaye hain.

  2. Games: PUBG, Counter-Strike aur bade 3D games C++ par based hote hain (Unreal Engine).

  3. Browsers: Google Chrome aur Mozilla Firefox mein bhi C++ ka use hota hai.

  4. Graphics: Adobe Photoshop aur Illustrator jaise software C++ se bane hain.

4. Ek Simple C++ Program (Example)

Agar aap C++ mein "Hello World" print karna chahte hain, toh uska code aisa dikhega:

C++
#include <iostream> // Header file for input/output
using namespace std;

int main() {
    cout << "Hello World!"; // Output print karne ke liye
    return 0;
} 


Is Code ka Matlab:

  • #include <iostream>: Ye ek library hai jo humein screen par kuch dikhane (output) mein madad karti hai.

  • int main(): Ye wo jagah hai jahan se program chalna shuru hota hai.

  • cout: Iska use screen par message dikhane ke liye hota hai.

  • return 0;: Iska matlab hai ki program sahi se khatam ho gaya.

5. C++ Seekhne ke Fayde

  • Agar aap C++ seekh lete hain, toh Java aur Python jaisi languages seekhna aapke liye bahut asaan ho jayega.

  • Google, Microsoft aur Amazon jaisi badi companies C++ developers ko hire karti hain.

Kya aap C++ seekhna shuru karna chahte hain? Agar haan, toh main aapko bata sakta hoon ki Variable, Data Types ya Loop kya hote hain.







Variable, Data Types ya Loop kya hote hain.

1. Variables (डेटा रखने का डिब्बा)

Variable ek tarah ka "container" ya "dibba" hota hai jisme aap koi value (jaise number ya naam) store karte hain.

  • Example: Agar aapko kisi ki age (umra) yaad rakhni hai, toh aap ek variable banayenge.

2. Data Types (डेटा का प्रकार)









Computer ko batana padta hai ki aap kis tarah ka data store kar rahe hain. C++ mein main data types ye hain:

Data TypeKya store karta hai?Example
intPoore numbers (Integers)10, -50, 1000
floatPoint wale numbers (Decimals)10.5, 3.14
charSingle character (Ek akshar)'A', 'b', '@'
stringPura naam ya sentence"Hello India"
boolSahi ya Galat (True/False)true ya false

3. C++ mein Variable kaise banate hain? (Syntax)

C++ mein variable banane ka tareeka ye hai:

Data_Type Variable_Name = Value;

Example Code:

C++
int age = 25;           // Number ke liye
float price = 99.50;    // Point wale number ke liye
char grade = 'A';       // Ek akshar ke liye
string name = "Rahul";  // Naam ke liye

4. Input aur Output (Likhna aur Padhna)

Computer se baat karne ke liye do commands sabse zaroori hain:

  1. cout (C-Out): Screen par kuch dikhane ke liye.

  2. cin (C-In): User se kuch poochne ya keyboard se value lene ke liye.

Ek Chhota sa Program (Example):

Maaniye humein user se uski age poochkar print karni hai:

C++
#include <iostream>
using namespace std;

int main() {
    int age; // Variable banaya

    cout << "Apni age likhiye: "; // Screen par message dikhaya
    cin >> age;                  // Keyboard se value li

    cout << "Aapki age hai: " << age; // Result dikhaya
    
    return 0;
}

Aapke liye agla step:

C++ seekhne ke liye aapko ek Compiler chahiye hoga jahan aap ye code chala saken.

  • Laptop/PC ke liye: "Dev-C++" ya "VS Code" download kar sakte hain.

  • Mobile ke liye: Play Store se "Coding C++" app download kar sakte hain.


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