📘 Lesson · Lesson 76

new and delete

Dynamic Memory in C++

💡 Note

In C++, new allocates memory on the heap and delete frees it — the modern replacement for malloc/free.

Example

C++

#include <iostream>
using namespace std;
int main() {
    int* p = new int(10);    // allocate
    cout << *p << "\n";       // 10
    delete p;                 // free single

    int* arr = new int[3];    // allocate array
    delete[] arr;             // free array
    return 0;
}

Output:
10

Summary

new allocates, delete frees a single object.
For arrays use new[] and delete[].

C++ में Dynamic Memory

💡 Note

C++ में new heap पर memory allocate करता है और delete free करता है — malloc/free का modern replacement।

Example

C++

#include <iostream>
using namespace std;
int main() {
    int* p = new int(10);    // allocate
    cout << *p << "\n";       // 10
    delete p;                 // single free

    int* arr = new int[3];    // array allocate
    delete[] arr;             // array free
    return 0;
}

Output:
10

सारांश

new allocate, delete single object free करता है।
Arrays के लिए new[] और delete[] use करें।

← Back to C++ Tutorial