Remove key_err and remove trailing space after output

src/main.cpp

@@ -41,13 +41,14 @@ int main(int argc, char *argv[]) {
         if (out_x[0] == "err") {
             cerr << "Error: the file could not be opened." << endl;
             return 2;
-        } else if (out_x[0] == "key_err") {
-            cerr << "Error: the specified key " << key_ << " does not exist." << endl;
-            return 2;
         } else {
+            string out;
             for (size_t i = 0; i < out_x.size(); i++) {
-                cout << out_x[i] << delim;
+                out += out_x[i];
+                out += delim;
             }
+            out.erase(out.size()-1, out.size());  // Trim off the trailing out delim
+            cout << out << endl;
         }
     } else {
         cout << "Usage: " << argv[0] << " key=[key] file=[file] amt=[amount]" << endl;