Although Go intends to make your programming experience better and save you from the quirks of C, C remains a very capable programming language that is still useful. This means that there are situations, such as when using a database or a device driver written in C, that still require the use of C, which means that you will need to work with C code in your Go projects.
If you find yourself using this capability many times in the same project, you might need to reconsider your approach or your choice of programming language.
