"Exclusive contract" is often not merely a problem with income declaration, it may legally require that you can only get payed for your work if the exclusive employer explicitly permits this specific incident.
In C++, this may be even worse. Functions int f(int k) { return k+1; } and int f(const int k) { return k-1; } are considered different.
Worse, getting such money flow, EFF will get corrupt very soon.
"Exclusive contract" is often not merely a problem with income declaration, it may legally require that you can only get payed for your work if the exclusive employer explicitly permits this specific incident.
In C++, this may be even worse. Functions int f(int k) { return k+1; } and int f(const int k) { return k-1; } are considered different.
Worse, getting such money flow, EFF will get corrupt very soon.