Senior Firmware Developer Interview Questions and Answers

A null pointer is a pointer that does not point to any memory location.

• A null pointer is represented by the value 0 or nullptr in C++.

• Dereferencing a null pointer results in undefined behavior.

• Null pointers are commonly used to indicate the end of a linked list or array.

• Null pointers can be used to check if a pointer has been initialized or not.

Structure padding is the insertion of unused memory between structure members to align them to specific memory addresses.

• Padding is added to ensure that each member of the structure is aligned to a memory address that is a multiple of its size.

• Padding is added to improve performance by allowing the CPU to access data more efficiently.

• Padding can be controlled using compiler-specific directives or pragmas.

• Example: struct example { char a; int b; char c; }; - padding will be ad...read more

A C structure is a user-defined data type that groups related variables of different data types under a single name.

• Structures allow for the creation of complex data types that can be used to store and manipulate related data.

• They can contain variables of different data types, including other structures.

• Structures are defined using the 'struct' keyword and can be accessed using the dot operator.

• Example: struct person { char name[20]; int age; float salary; };

• Example: struct p...read more

CTC expectation refers to the expected salary or compensation package for the position.

• CTC stands for Cost to Company

• It includes all the expenses incurred by the company for an employee, such as salary, bonuses, benefits, and taxes

• The CTC expectation can vary based on the candidate's experience, skills, and the company's budget

• It is important to discuss CTC expectations during the interview process to avoid any misunderstandings later on