Differentiate between new and malloc() in the context of C++. – InterviewSolution

InterviewSolution

1.

Differentiate between new and malloc() in the context of C++.

Answer»

The following table lists the differences between new and malloc():

new	malloc()
new is an operator.	malloc() is a function.
When we use a new operator, it calls the constructor.	Usage of the malloc() function does not involve invoking constructors.
It RETURNS the DATA TYPE specified while using the new operator.	It returns a VOID * type which needs to be typecasted manually to the required data type.
When the new operator fails, it THROWS an error of bad_alloc exception.	When the malloc() command fails, it returns NULL.
Here, the size of memory required is computed automatically by the compiler.	Here, the size of memory required needs to be computed manually and provided at the time of using malloc().

Discussion

No Comment Found

Related InterviewSolutions

Given a string as an input, write a program to reverse the words in the given string and display the new string.
Given two unsorted arrays. Check if the second array is a subarray of the first array.
Differentiate between SQL and NoSQL databases.
Differentiate between preemptive and non-preemptive scheduling algorithms.
What are the advantages and disadvantages of subnetting?
What do you understand by subnetting in the context of computer networks?
Write a query in SQL to find the details of an employee having the nth highest salary from a given table Employee. The value of n needs to be taken as user input. Assume that the table Employee has the following schema.
Differentiate between WHERE clause and HAVING clause in SQL.
Explain the Open Systems Interconnection (OSI) model in the context of computer networks.
Differentiate between new and malloc() in the context of C++.