🔵 Core C++ · Lesson 26

Pointers in C++

What is Pointers in C++?

Pointers in C++
A pointer stores the address of another variable. Pointers are useful for dynamic memory, arrays, linked lists and low-level programming.

Level
🔵 Core C++ Features

Example File
pointers.cpp

Main Focus
Concept + syntax + practical C++ program

Why should you learn this?

It helps you write correct and readable C++ programs.
It is used repeatedly in school practicals, projects and competitive programming.
It builds the base for advanced topics such as OOP, STL and data structures.

Important Terms

Term	Meaning / Use
address	Pointers in C++ programming में Address use होता है।
pointer	Pointers in C++ programming में Pointer use होता है।
dereference	Pointers in C++ programming में Dereference use होता है।
nullptr	Pointers in C++ programming में Nullptr use होता है।
memory	Pointers in C++ programming में Memory use होता है।

Syntax / Pattern

C++

int *ptr = &variable; *ptr gives value.

Example Program

main.cpp

#include <iostream>
using namespace std;
int main(){
    int x = 25;
    int *p = &x;
    cout << *p;
    return 0;
}

Expected Output

Program Explanation

&x gives address of x.
p stores address.
*p accesses the value stored at that address.

Exam Tip: In C++ practical answers, write the logic first, then the program, then expected output. For theory, always include one suitable example.

Where will you use it?

dynamic data structures
memory management
arrays

Common Mistakes

Dereferencing uninitialized pointer.
Using deleted pointer.
Confusing * in declaration and dereference.

Practice Tasks

Print address and value of a variable.
Change variable value using pointer.

Summary

Pointers in C++ एक ज़रूरी C++ topic है। परिभाषा सीखें, syntax समझें, example program चलाएं और फिर practice tasks हल करके concept मज़बूत करें।

Pointers in C++ क्या है?

Pointers in C++
A pointer stores the address of another variable. Pointers are useful for dynamic memory, arrays, linked lists and low-level programming.

Level
🔵 Core C++ Features

Example File
pointers.cpp

मुख्य फोकस
Concept + syntax + practical C++ program

इसे क्यों सीखें?

यह आपको सही और पढ़ने-योग्य C++ programs लिखने में मदद करता है।
यह school practicals, projects और competitive programming में बार-बार use होता है।
यह OOP, STL और data structures जैसे advanced topics की नींव बनाता है।

ज़रूरी Terms

Term	अर्थ / उपयोग
address	Address Pointers in C++ programming में use होता है।
pointer	Pointer Pointers in C++ programming में use होता है।
dereference	Dereference Pointers in C++ programming में use होता है।
nullptr	Nullptr Pointers in C++ programming में use होता है।
memory	Memory Pointers in C++ programming में use होता है।

Syntax / Pattern

C++

int *ptr = &variable; *ptr gives value.

Example Program

main.cpp

#include <iostream>
using namespace std;
int main(){
    int x = 25;
    int *p = &x;
    cout << *p;
    return 0;
}

Expected Output

Program Explanation

&x gives address of x.
p stores address.
*p accesses the value stored at that address.

Exam Tip: In C++ practical answers, write the logic first, then the program, then expected output. For theory, always include one suitable example.

Where will you use it?

dynamic data structures
memory management
arrays

आम गलतियाँ (Common Mistakes)

Dereferencing uninitialized pointer.
Using deleted pointer.
Confusing * in declaration and dereference.

अभ्यास (Practice Tasks)

Print address and value of a variable.
Change variable value using pointer.

सारांश

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