Valeo Software Engineer Interview Questions and Answers

A program to print Fibonacci series using recursion.

• Define a recursive function that takes an integer n as input

• Base case: if n is 0 or 1, return n

• Recursive case: return the sum of the previous two Fibonacci numbers

• Call the recursive function with the desired number of terms and print the result

Structure is a collection of variables of different data types while union is a collection of variables of same data type.

• Structure allocates memory for all its variables while union allocates memory for only one variable at a time.

• Structure is used when we want to store different types of data while union is used when we want to store only one type of data.

• Structure is accessed using dot operator while union is accessed using arrow operator.

• Example of structure: struct stude...read more

Dangling pointers can be avoided by setting them to NULL after freeing the memory they point to.

• Always initialize pointers to NULL.

• Set pointers to NULL after freeing the memory they point to.

• Avoid accessing memory through a pointer after it has been freed.

• Use smart pointers or garbage collection to automate memory management.

Embedded C is a subset of the C programming language, specifically designed for programming embedded systems.

• Embedded C is optimized for resource-constrained systems with limited memory and processing power.

• It includes additional keywords and features for controlling hardware directly.

• Embedded C often involves working with microcontrollers, sensors, and other hardware components.

• Regular C can be used for general-purpose programming on desktop or server systems.

A virtual function is a function in a base class that is declared using the keyword 'virtual' and can be overridden by a function with the same signature in a derived class.

• Virtual functions allow for dynamic polymorphism in object-oriented programming.

• They are used to achieve runtime polymorphism by allowing a function to be called based on the type of object it is called on.

• Virtual functions are declared in a base class and can be overridden in derived classes to provide sp...read more

Structure is a collection of variables of different data types while union is a collection of variables of same data type.

• Structure allocates memory for all its variables while union allocates memory for only one variable at a time.

• Structure is used when we want to store different types of data while union is used when we want to store only one type of data.

• Structure is accessed using dot operator while union is accessed using arrow operator.

• Example of structure: struct stude...read more