Replace 0 by EXIT_SUCCESS

examples/cpp/acp_challenge_routing.cc

@@ -305,5 +305,5 @@ int main(int argc, char** argv) {
     LOG(FATAL) << "Please supply a data file with --input=";
   }
   operations_research::Solve(FLAGS_input, FLAGS_solution);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/constraint_programming_cp.cc

@@ -60,5 +60,5 @@ int main(int argc, char **argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::RunConstraintProgrammingExample();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/costas_array.cc

@@ -448,5 +448,5 @@ int main(int argc, char** argv) {
     }
   }
 
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/cryptarithm.cc

@@ -106,5 +106,5 @@ void Cryptoarithmetics() {
 int main(int argc, char** argv) {
   gflags::ParseCommandLineFlags(&argc, &argv, true);
   operations_research::Cryptoarithmetics();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/cvrp_disjoint_tw.cc

@@ -160,5 +160,5 @@ int main(int argc, char** argv) {
   } else {
     LOG(INFO) << "No solution found.";
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/cvrptw.cc

@@ -147,5 +147,5 @@ int main(int argc, char** argv) {
   } else {
     LOG(INFO) << "No solution found.";
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/cvrptw_with_breaks.cc

@@ -187,5 +187,5 @@ int main(int argc, char** argv) {
   } else {
     LOG(INFO) << "No solution found.";
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/cvrptw_with_refueling.cc

@@ -154,5 +154,5 @@ int main(int argc, char** argv) {
   } else {
     LOG(INFO) << "No solution found.";
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/cvrptw_with_resources.cc

@@ -150,5 +150,5 @@ int main(int argc, char** argv) {
   } else {
     LOG(INFO) << "No solution found.";
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/cvrptw_with_stop_times_and_resources.cc

@@ -188,5 +188,5 @@ int main(int argc, char** argv) {
   } else {
     LOG(INFO) << "No solution found.";
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/dimacs_assignment.cc

@@ -167,7 +167,7 @@ int SolveDimacsAssignment(int argc, char* argv[]) {
   }
   delete assignment;
   delete graph;
-  return 0;
+  return EXIT_SUCCESS;
 }
 }  // namespace operations_research
 

examples/cpp/dobble_ls.cc

@@ -756,5 +756,5 @@ int main(int argc, char** argv) {
   const int kCards = kSymbolsPerCard * (kSymbolsPerCard - 1) + 1;
   const int kSymbols = kCards;
   operations_research::SolveDobble(kCards, kSymbols, kSymbolsPerCard);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/flow_api.cc

@@ -84,5 +84,5 @@ int main(int argc, char** argv) {
   gflags::ParseCommandLineFlags(&argc, &argv, true);
   operations_research::MinCostFlowOn4x4Matrix();
   operations_research::MaxFeasibleFlow();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/frequency_assignment_problem.cc

@@ -882,5 +882,5 @@ int main(int argc, char** argv) {
       component_id++;
     }
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/golomb.cc

@@ -100,5 +100,5 @@ int main(int argc, char** argv) {
       operations_research::GolombRuler(n);
     }
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/integer_programming.cc

@@ -88,5 +88,5 @@ int main(int argc, char** argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::RunAllExamples();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/job_shop_cp.cc

@@ -199,6 +199,6 @@ int main(int argc, char **argv) {
 	google::InitGoogleLogging(argv[0]);
 	FLAGS_logtostderr = 1;
 	operations_research::SolveJobShopExample();
-	return 0;
+	return EXIT_SUCCESS;
 }
 

examples/cpp/jobshop.cc

@@ -182,5 +182,5 @@ int main(int argc, char** argv) {
   operations_research::JobShopData data;
   data.Load(FLAGS_data_file);
   operations_research::Jobshop(data);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/jobshop_earlytardy.cc

@@ -408,5 +408,5 @@ int main(int argc, char** argv) {
                             FLAGS_scale_factor, FLAGS_seed);
   }
   operations_research::EtJobShop(data);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/jobshop_ls.cc

@@ -222,5 +222,5 @@ int main(int argc, char** argv) {
   operations_research::JobShopData data;
   data.Load(FLAGS_data_file);
   operations_research::JobshopLs(data);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/knapsack.cc

@@ -76,5 +76,5 @@ int main(int argc, char **argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::RunKnapsackExample();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/linear_assignment_api.cc

@@ -69,5 +69,5 @@ int main(int argc, char** argv) {
   gflags::ParseCommandLineFlags(&argc, &argv, true);
   operations_research::AssignmentOn4x4Matrix();
   operations_research::AnotherAssignment();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/linear_programming.cc

@@ -78,5 +78,5 @@ int main(int argc, char** argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::RunLinearProgrammingExample();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/linear_solver_protocol_buffers.cc

@@ -101,5 +101,5 @@ void RunAllExamples() {
 int main(int argc, char** argv) {
   gflags::ParseCommandLineFlags(&argc, &argv, true);
   operations_research::RunAllExamples();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/ls_api.cc

@@ -201,5 +201,5 @@ int main(int argc, char** argv) {
   operations_research::SolveProblem(operations_research::LNS);
   operations_research::SolveProblem(operations_research::LS);
   operations_research::SolveProblem(operations_research::LS_WITH_FILTER);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/magic_square.cc

@@ -156,5 +156,5 @@ int main(int argc, char** argv) {
       operations_research::MagicSquare(n);
     }
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/max_flow.cc

@@ -64,5 +64,5 @@ int main(int argc, char** argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::SolveMaxFlow();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/min_cost_flow.cc

@@ -84,5 +84,5 @@ int main(int argc, char** argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::SolveMinCostFlow();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/multidim_knapsack.cc

@@ -350,5 +350,5 @@ int main(int argc, char** argv) {
   operations_research::MultiDimKnapsackData data;
   data.Load(FLAGS_data_file);
   operations_research::SolveKnapsack(&data);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/network_routing.cc

@@ -927,5 +927,5 @@ int main(int argc, char** argv) {
   solver.Init(data, FLAGS_extra_hops, FLAGS_max_paths);
   LOG(INFO) << "Final cost = "
             << solver.LnsSolve(FLAGS_time_limit, FLAGS_fail_limit);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/nqueens.cc

@@ -273,5 +273,5 @@ int main(int argc, char** argv) {
       operations_research::NQueens(n);
     }
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/nqueens2.cc

@@ -71,5 +71,5 @@ int main(int argc, char** argv) {
       operations_research::NQueens(n);
     }
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/nurses_cp.cc

@@ -215,5 +215,5 @@ int main(int argc, char **argv) {
 	google::InitGoogleLogging(argv[0]);
 	FLAGS_logtostderr = 1;
 	operations_research::SolveNursesExample();
-	return 0;
+	return EXIT_SUCCESS;
 }

examples/cpp/pdptw.cc

@@ -310,5 +310,5 @@ int main(int argc, char** argv) {
   if (!operations_research::LoadAndSolve(FLAGS_pdp_file)) {
     LOG(INFO) << "Error solving " << FLAGS_pdp_file;
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/rabbits_pheasants_cp.cc

@@ -63,5 +63,5 @@ int main(int argc, char **argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::RunConstraintProgrammingExample();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/random_tsp.cc

@@ -163,5 +163,5 @@ void Tsp() {
 int main(int argc, char** argv) {
   gflags::ParseCommandLineFlags(&argc, &argv, true);
   operations_research::Tsp();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/sat_runner.cc

@@ -243,7 +243,7 @@ int Run() {
     // really use it for any other purpose, we comply.
     if (response.status() == CpSolverStatus::FEASIBLE) return 10;
     if (response.status() == CpSolverStatus::INFEASIBLE) return 20;
-    return 0;
+    return EXIT_SUCCESS;
   }
 
   if (FLAGS_strict_validity) {
@@ -419,7 +419,7 @@ int Run() {
   // really use it for any other purpose, we comply.
   if (result == SatSolver::FEASIBLE) return 10;
   if (result == SatSolver::INFEASIBLE) return 20;
-  return 0;
+  return EXIT_SUCCESS;
 }
 
 }  // namespace

examples/cpp/simple_program.cc

@@ -35,6 +35,6 @@ int main() {
   cout << "x = " << x->solution_value() << endl;
   cout << "y = " << y->solution_value() << endl;
 
-  return 0;
+  return EXIT_SUCCESS;
 }
 // [END program]

examples/cpp/slitherlink.cc

@@ -401,5 +401,5 @@ int main() {
   operations_research::SlitherLink(medium);
   std::cout << "Big problem" << std::endl;
   operations_research::SlitherLink(big);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/sports_scheduling.cc

@@ -399,5 +399,5 @@ int main(int argc, char** argv) {
   CHECK_GE(FLAGS_num_teams, 2) << "At least 2 teams";
   CHECK_LT(FLAGS_num_teams, 16) << "The model does not scale beyond 14 teams";
   operations_research::SportsScheduling(FLAGS_num_teams);
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/stigler_diet.cc

@@ -296,5 +296,5 @@ int main(int argc, char** argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::RunStiglerDietExample();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/strawberry_fields_with_column_generation.cc

@@ -636,5 +636,5 @@ int main(int argc, char** argv) {
         operations_research::kInstances[FLAGS_colgen_instance];
     operations_research::SolveInstance(instance, solver_type);
   }
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/tsp.cc

@@ -138,5 +138,5 @@ int main(int argc, char** argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::Solve();
-  return 0;
+  return EXIT_SUCCESS;
 }

examples/cpp/vrp.cc

@@ -160,5 +160,5 @@ int main(int argc, char** argv) {
   google::InitGoogleLogging(argv[0]);
   FLAGS_logtostderr = 1;
   operations_research::Solve();
-  return 0;
+  return EXIT_SUCCESS;
 }