Search notes:

C++

Don't confuse c++ with the preprocessor whose executable name is cpp.

The GNU make manual encourages to use the .cc suffix for C++ files.

Expressions

Examples for expressions:

An expression has two properties

This tweet suggests that the following code is valid C++23:

import std;

int main() {
    auto v = std::vector{1, 2, 3};
    std::print("{}", v);
}

import is apparently a feature of C++20.