adding cs142 code

cs142/smcquay/people/person.cc

@@ -0,0 +1,25 @@
+#include "person.h"
+
+void person::populate_data() {
+  cout << "enter name: ";
+  getline(cin, name);
+
+  cout << "enter age: ";
+  cin >> age;
+}
+
+string person::as_string() const {
+  ostringstream stm;
+
+  stm << "name: "
+      << name
+      << ", age: "
+      << age;
+
+  return stm.str();
+}
+
+ostream & operator<<(ostream & os, const person & e) {
+  os << e.as_string();
+  return os;
+}