A staple in microcontroller programming interview questions, be prepared to answer this one. When it comes to microcontroller-based projects, two of the most popular programming languages used are C and C++. Both of these languages are commonly used in embedded devices that use real operating systems (such as Linux). They both offer a wide range of features and capabilities that make them well-suited for programming microcontrollers.   C is known as procedural language because it requires you to write out instructions step-by-step in order to complete a task. This makes C ideal for small projects with limited resources like those found in microcontrollers. Its simple syntax allows for quick development times and efficient execution when running on a microcontroller device.   C++ is an extension of the C language that offers many of the same benefits as C but also adds additional features such as object-oriented programming, which allows developers to better organize their code and create more efficient programs. Like its predecessor, C++ has become one of the most popular programming languages used by developers today due to its versatility and wide range of applications. C++ is an extension of the C language that offers many of the same benefits as C but also adds additional features such as object-oriented programming, which allows developers to better organize their code and create more efficient programs. Like its predecessor, C++ has become one of the most popular programming languages used by developers today due to its versatility and wide range of applications.