1. C Language
C is a general-purpose, imperative computer programming language, supporting structured programming,lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, and therefore it has found lasting use in applications that had formerly been coded in assembly language, including operating systems, as well as various application software for computers ranging fromsupercomputers to embedded systems.
2. C++ Language
It was designed with a bias toward system programming and embedded, resource-constrained and large systems, with performance, efficiency and flexibility of use as its design highlights. C++ has also been found useful in many other contexts, with key strengths being software infrastructure and resource-constrained applications, including desktop applications, servers (e.g. e-commerce,web search or SQL servers), and performance-critical applications (e.g. telephone switches or space probes). C++ is a compiledlanguage, with implementations of it available on many platforms and provided by various organizations, including the FSF, LLVM,Microsoft, Intel and IBM.
3. Android App Development
Android software development is the process by which new applications are created for the Android operating system. Applications are usually developed in Java programming language using the Android software development kit (SDK), but other development environments are also available.