Declarations

C 99 provide programmer a way to save a memory space.

struct DM {

int x,

char* z[]

}

z just a label, compilar won’t allocate a memory for that, and this declaration only could put in last of structure declaration. therefore if we need to allocate a space for this structure when we need to store a data in variable z, otherwise we will assign wrong address which is next to variable x.

 

Reference

[1] C in a nutshell