Added Union of two array Program from C++ language

.gitignore

@@ -3,4 +3,5 @@
 .DS_Store
 *.idea*
 .github
-*.github/
+*.github/
+/.vs

Program's_Contributed_By_Contributors/C++ Programs/Array/Union_of_two_array.cpp

@@ -0,0 +1,26 @@
+
+#include <bits/stdc++.h>
+
+using namespace std;
+void getUnion(int a[], int n, int b[], int m)
+{
+	set<int> s;
+	for (int i = 0; i < n; i++)
+	s.insert(a[i]);
+
+	for (int i = 0; i < m; i++)
+		s.insert(b[i]);
+	cout << "Number of elements after union operation: " << s.size() << endl;
+	cout << "The union set of both arrays is :" << endl;
+	for (auto itr = s.begin(); itr != s.end(); itr++)
+		cout << *itr
+			<< " ";
+}
+
+int main()
+{
+	int a[9] = { 1, 2, 5, 6, 2, 3, 5, 7, 3 };
+	int b[10] = { 2, 4, 5, 6, 8, 9, 4, 6, 5, 4 };
+
+	getUnion(a, 9, b, 10);
+}