Is it possible to restrict or prohibit functions from generating exceptions?

In C++, you can restrict functions from throwing exceptions using the noexcept specifier. If a function is declared with noexcept, it is guaranteed not to throw an exception. For example:

void func() noexcept {
    // code that does not throw exceptions
}

If an exception is thrown inside such a function, the program will call std::terminate().

In the old C++11 standard, there was a throw() specifier, which meant that the function does not throw exceptions, but now it is recommended to use noexcept.

In C (not C++), exceptions are not supported, so the question is not relevant.