With a bit of fiddeling you can use every kind of bracket to basically make function calls in c++
Here are the links to the snippets, all compile and run
Rust: https://godbolt.org/z/bM3d7bG14
Might be a German thing. For us, they are all "Klammern" and we call them either round (rund), angular (eckig) or curved (geschweift).