union data1
{ int i;
unsigned char c[4];
};
union data2
{ int i
unsigned char c[4];
float f;
};
struct st1
{
int id;
union data1 value;
};
struct st2
{
int id;
union data2 value;
};
st1 firstdata;
st2 seconddata;
firstdata.id = 1;
firstdata.value.i = 2;
seconddata = firstdata; //success or fail????
问题:如题 含有union的结构体A能直接赋值给另一个含有union的结构体B吗?其中B中union的成员包含了A中union中所有的成员