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dynamic memory in c++

Defiant Dotterel answered on January 15, 2022 Popularity 10/10 Helpfulness 2/10

answer dynamic memory in c++

related dynamic memory c++

dynamic memory in c++

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#include <iostream>

int main()
{
  int* ptr = new int(5);
  
  int* arr = new int[3];
  arr[0] = 96;
  arr[1] = 45;
  arr[2] = 72;
  
  std::cout << *ptr << "\n";// output: 5
  
  for (int i = 0; i < 3; i++)
  {
    std::cout << arr[i] << " ";
  } // output: 96 45 72
}

Popularity 10/10 Helpfulness 2/10 Language cpp

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Tags: c++ dynamic memory

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Contributed on Jan 15 2022

Defiant Dotterel

0 Answers Avg Quality 2/10

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#include<iostream> //c++
#include<stdio.h> // c

C++:
	int* array = new int[n]; // одномерный массив

	free(array);      	 //можно также использовать delete(array); (освобождение памяти)




	int** array = new int*[n]; //двумерный массив (n строк)
	for (int i = 0; i < n; i++) {
		array[i] = new int[m];   	            //(m столбцов)
	}
	
	 for (int i = 0; i < n; i++)      //освобождение памяти
        delete[] array[i];
    delete [] array;

C:

    int**array = (int**)malloc(n * sizeof(int*));
    for (i = 0; i < n; i++) {
        array[i] = (int*)malloc(n * sizeof(int));
    }

     for (i = 0; i < n; i++)
        free(array[i]);               //освобождение памяти
     free(array);          



     int* array = (int*)malloc(n * sizeof(int));   //одномерный массив
     free(array);                                  //освобождение памяти

Popularity 10/10 Helpfulness 3/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Feb 04 2022

Brave Boar

0 Answers Avg Quality 2/10

dynamic memory in c++

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