added basic structure of cpp

Author: Preeti amurya

basics/basicstrictutre.cpp

@@ -0,0 +1,16 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main()
+{
+ freopen("i.txt", "r", stdin);
+
+ int n;
+ cin >> n;
+ cout << "Sfds" << n;
+ cout << endl;
+ vector<int>arr={1,2,3};
+ cout<<arr.size();
+
+ return 0;
+}