#include <iostream>
#include <string.h>
using namespace std;

void strconcatenate(string s1[],string s2[],string s3[],int size) {
	int reached = 0;
	for (int i = 0; i < size; i++) {
		s3[i] = s1[i];
		reached++;
	}
	s3[reached] = "**";
	reached++;
	for (int i = 0; i < size; i++) {
		s3[reached] = s2[i];
		reached++;
	}
}

void main() {
	string s1[20];
	string s2[20];
	string s3[41];
	for (int i = 0; i < 20; i++) {
		cout << "Please Input first string array index " << i << endl;
		cin >> s1[i];
	}
	for (int i = 0; i < 20; i++) {
		cout << "Please Input second string array index " << i << endl;
		cin >> s2[i];
	}
	strconcatenate(s1, s2, s3,20);
	for (int i = 0; i < 40; i++) {

		cout << s3[i] << endl;
	}
}