🔵 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	Address used in Pointers in C++ programming.
pointer	Pointer used in Pointers in C++ programming.
dereference	Dereference used in Pointers in C++ programming.
nullptr	Nullptr used in Pointers in C++ programming.
memory	Memory used in Pointers in C++ programming.

Syntax / Pattern

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

Example Program

#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++ is an important C++ topic. Learn the definition, understand the syntax, run the example program and then solve the practice tasks to make the concept strong.