class A {
int x;
static int i;
};
int x = 10;
int A::i = x;
When I compile the code above, it get the error
<source>:8:12: error: invalid use of non-static data member 'A::x'
8 | int A::i = x;
| ^
<source>:2:9: note: declared here
2 | int x;
| ^
What's causing this error?
This is a peculiar language quirk - the scope resolution on the left, in int A::i
, affects the lookup scope on the right, so that actually refers to the x
member of A
.
Either rename one of the variables, or specify the scope of the desired x
explicitly:
int A::i = ::x;