Move C code with struct initialization and assignment to c++ compiler - c++

Question

Why is there no direct assigment during declaration of a struct possible in C++?
I have the following C code that wont work with C++ compiler:
static const struct {
struct structtype1 header;
struct {
struct structtype2 intf;
struct structtype3 src;
} foo1, foo2;
} bar = {
.header = {
.byte1 = 0x23,
.length = 12,
.count1 = 4,
.count2 = 4,
},
.foo1= {
.intf = {
.data = 0x23,
.len = 2,
.ep = 3,
},
.src= {
.data = 0x21,
.len = 4,
.ep = 2,
},
},
.foo2= {
.intf = {
.data = 0x17,
.len = 11,
.ep = 2,
},
.src= {
.data = 0x20,
.len = 2,
.ep = 1,
},
},
};

Answer 1

you have two choices:
1.use constructors for that
this will define values for members but all structs will be the same
struct _pnt { int x,y,z; _pnt() { x=0; y=0; z=0; } };
_pnt p0,p1,p2; // all points are initialized to (0,0,0)
2.use definition as usual it still works in any C++ compiler I used
I think this is what you want
Do not forget that the order of members is the same as in declaration !!!
struct _pnt { int x,y,z; };
_pnt p0={0.0,0.0,0.0},
p1={1.0,0.0,0.0},
p2={0.0,1.0,0.0};
problem is you have to init all members not just some !!!