demo of struct copying

strct_test.cpp

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <iostream>
#include <vector>
#include <fstream>
#include <sstream>
#include <string>
using namespace std;
// compile: g++ strct_test.cpp -o outfile.exe
// #include <string>


struct Holder{
  vector <int> sequence ;
  Holder(int tadd){
  	for (int i = 0; i < tadd; ++i)
  	{
  		sequence.push_back(i);
  	}
  }

  Holder(Holder *h, int tadd){
  	sequence = h->sequence;
	for (int i = 0; i < tadd; ++i)
  	{
  		sequence.push_back(i);
  	}
  }

  void printit(void){
  	printf("[");
  	for (int i = 0; i < sequence.size(); ++i)
  	{
  		printf("%d, ", i);
  	}
  	printf("]\n");
  }
};

int main(int argc, char *argv[]){
	
	Holder a = Holder(5);

	Holder b = Holder(&a,10);

	printf("a=");

	a.printit();

	printf("b=");

	b.printit();
	
	return 0;
}