adding cs142 code

cs142/test02/test.cc

@@ -0,0 +1,16 @@
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+int main() {
+    vector<string> names;
+    names.push_back("derek");
+    names.push_back("colleen");
+    names.push_back("stpehen");
+    names.pop_back();
+    for(int i = 0; i < names.size(); i++) {
+        cout << names[i] << endl;
+    }
+    cout << names.size() << endl;
+}