explicit non-single parameter constructor
c++, constructor, explicit, explicit-constructor
Solution
In C++03, and in this particular case, it makes no sense for a two parameter constructor to be marked `explicit`. But it could make sense here:
explicit X(int i, int j=42);
So, marking a two parameter constructor with `explicit` does not have to be an error.
In C++11, this use of explicit would prevent you from doing this:
X x = {1,2};
Problem
Can anyone explain why does non-single parameter constructor marked as explicit compile? As far as I understand this is absolutely useless keyword here, so why does this compile without error? ``` class X { public: explicit X(int a, int b) { /* ... */} }; ```