Example of creating memory in heap

C++

int Geeks()
{
    // Nothing allocated yet excluding the
    // pointer itself, which is allocated
    // here on the stack.
    char* p;
 
    // Memory allocated on the stack.
    bool flag = true;
 
    if (flag) {
 
        // Create 1000 bytes on the stack
        char buffer[1000];
 
        // Create 1000 bytes on the heap
        p = new char[1000];
    }
 
    // buffer is deallocated here but pointer
    // p is not Here occurs a memory leak,
    // We have to call delete[] p;
}

Java

/*package whatever //do not write package name here */
 
import java.io.*;
 
class GFG {
    public static void main(String[] args)
    {
        // java does not have direct access to memory
        // location ie. pointers so we use Object
        Object p;
 
        // Memory allocated on the stack.
        boolean flag = true;
 
        if (flag) 
        {
            // Create 16 bytes on the stack memory
            char buffer;
 
            // Create 1000 bytes on the heap memory
            p = new Object[1000];
        }
    }
}
//This code is contributed by Akshay Tripathi(akshaytripathi19410)

Python

def Geeks():
    # Nothing allocated yet excluding the
    # pointer itself, which is allocated
    # here on the stack.
    p = None
 
    # Memory allocated on the stack.
    flag = True
 
    if flag:
        # Create 1000 bytes on the stack
        buffer = bytearray(1000)
 
        # Create 1000 bytes on the heap
        p = bytearray(1000)
 
    # buffer is deallocated here but pointer
    # p is not. Here occurs a memory leak,
    # We have to call del p
 
 # this code is contributed by bhardwajji

Javascript

<script>
// Define a function called Geeks
function Geeks() {
// Declare a pointer variable p
// No memory has been allocated yet, except for the pointer itself on the stack
let p;
 
// Declare a boolean variable flag and set it to true
let flag = true;
 
if (flag) {
     
// Declare a char array called buffer and allocate 1000 bytes on the stack
let buffer = new Array(1000);
 
// Allocate 1000 bytes on the heap and assign the pointer to p
p = new Array(1000);
}
 
    // buffer is deallocated here but pointer
    // p is not Here occurs a memory leak,
    // We have to call delete[] p;
}
// This code is contributed by Aman Kumar.
</script>

C#

using System;
 
class Program
{
    static void Main(string[] args)
    {
        // In C#, the equivalent of a Java Object is an object type
        object p;
 
        // Memory allocation on the stack
        bool flag = true;
 
        if (flag)
        {
            // Create 16 bytes on the stack memory
            char buffer;
 
            // Create 1000 bytes on the heap memory
            p = new object[1000];
        }
    }
}

What is a Memory Heap?

Similar Reads

C++ int Geeks() { // Nothing allocated yet excluding the // pointer itself, which is allocated // here on the stack. char* p; // Memory allocated on the stack. bool flag = true; if (flag) { // Create 1000 bytes on the stack char buffer[1000]; // Create 1000 bytes on the heap p = new char[1000]; } // buffer is deallocated here but pointer // p is not Here occurs a memory leak, // We have to call delete[] p; } Java /*package whatever //do not write package name here */ import java.io.*; class GFG { public static void main(String[] args) { // java does not have direct access to memory // location ie. pointers so we use Object Object p; // Memory allocated on the stack. boolean flag = true; if (flag) { // Create 16 bytes on the stack memory char buffer; // Create 1000 bytes on the heap memory p = new Object[1000]; } } } //This code is contributed by Akshay Tripathi(akshaytripathi19410) Python def Geeks(): # Nothing allocated yet excluding the # pointer itself, which is allocated # here on the stack. p = None # Memory allocated on the stack. flag = True if flag: # Create 1000 bytes on the stack buffer = bytearray(1000) # Create 1000 bytes on the heap p = bytearray(1000) # buffer is deallocated here but pointer # p is not. Here occurs a memory leak, # We have to call del p # this code is contributed by bhardwajji Javascript C# using System; class Program { static void Main(string[] args) { // In C#, the equivalent of a Java Object is an object type object p; // Memory allocation on the stack bool flag = true; if (flag) { // Create 16 bytes on the stack memory char buffer; // Create 1000 bytes on the heap memory p = new object[1000]; } } }...

Example of creating memory in heap

C++

Java

Python

Javascript

C#

What is a Memory Heap?

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