#include <iostream>
struct Demo
{
int abc[10];
int reply_port;
};
struct XYZ
{
struct Demo dem[10];
int x;
int y;
struct Demo a;
struct Demo b;
struct Demo c;
} arr[100];
int main(){
XYZ xyz ;//={};
std::cout<<xyz.a.abc[0]<<std::endl;
}
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