Webner Solutions Software Engineer Interview Questions and Answers

A pointer to pointer is a variable that stores the memory address of another pointer variable.

• It is used to create dynamic data structures like linked lists and trees.

• It allows multiple levels of indirection.

• It is denoted by ** in C and C++.

• Example: int **ptr;

• Example: ptr = &p; where p is a pointer variable.

An interface in software engineering defines a contract for classes to implement, specifying methods and properties.

• Defines a set of methods and properties that a class must implement

• Does not contain any implementation details, only method signatures

• Used to achieve abstraction and multiple inheritance in programming

• Examples: Java interfaces, C# interfaces

Palindrome code should be designed to check if a given string is the same forwards and backwards.

• Create a function that takes a string as input

• Remove any spaces and punctuation from the string

• Reverse the string and compare it to the original string to check if it is a palindrome