C++ attributes provide additional information to the compiler. They can optimize performance or enforce constraints. Attributes enhance code readability and intention. Common attributes include `[[nodiscard]]` and `[[deprecated]]`. Here’s an example of using an attribute:
“`cpp
#include
using namespace std;
[[nodiscard]] int calculate() { return 42; }
int main() {
calculate(); // Compiler warns if ignored
return 0;
}
“`
In this example, `[[nodiscard]]` warns if the return value is unused. Using attributes effectively can lead to safer code.