When dealing with computationally intensive tasks, such as in scientific computing, it is important to make the most out of the available computational resources. In order to accomplish this, one can use low-level programming languages, such as assembly, but the downside is that these are difficult to write, port and maintain. Alternatively, one can pick a high-level language with a small computational overhead. This module will teach how to program in one such a language: the C programming language.