tug: cpp: Add missing newlines

src/benchmarks/tug/cpp/src/main.cpp

@@ -9,13 +9,13 @@
 using TugType = double;
 
 int main(int argc, char **argv) {
-  std::cout << "BARITE_200 started...";
+  std::cout << "BARITE_200 started...\n";
   run_bench(barite_200_input, "barite_200_output.csv");
 
-  std::cout << "BARITE_LARGE started...";
+  std::cout << "BARITE_LARGE started...\n";
   run_bench(barite_large_input, "barite_large_output.csv");
 
-  std::cout << "SURFEX started...";
+  std::cout << "SURFEX started...\n";
   run_bench(surfex_input, "surfex_output.csv");
 
   return EXIT_SUCCESS;