diff --git a/README.md b/README.md
index 8bc2c0d..77a2bb4 100644
--- a/README.md
+++ b/README.md
@@ -99,7 +99,7 @@ int main(int argc, char *argv[]) {
   catch (const std::runtime_error& err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   auto input = program.get<int>("square");
@@ -781,7 +781,7 @@ int main(int argc, char *argv[]) {
   catch (const std::runtime_error& err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   // Use arguments
@@ -908,7 +908,7 @@ int main(int argc, char *argv[]) {
   catch (const std::runtime_error& err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   if (program.is_used("+f")) {
@@ -956,7 +956,7 @@ int main(int argc, char *argv[]) {
   catch (const std::runtime_error& err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   if (program.is_used("--foo")) {
@@ -1104,7 +1104,7 @@ int main(int argc, char *argv[]) {
   catch (const std::runtime_error& err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   if (program.is_used("--foo")) {
diff --git a/samples/compound_arguments.cpp b/samples/compound_arguments.cpp
index 66d5c92..4cfc037 100644
--- a/samples/compound_arguments.cpp
+++ b/samples/compound_arguments.cpp
@@ -19,7 +19,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   auto a = program.get<bool>("-a");               // true
diff --git a/samples/custom_assignment_characters.cpp b/samples/custom_assignment_characters.cpp
index d5deff1..7e35ae0 100644
--- a/samples/custom_assignment_characters.cpp
+++ b/samples/custom_assignment_characters.cpp
@@ -16,7 +16,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   if (program.is_used("--foo")) {
diff --git a/samples/custom_prefix_characters.cpp b/samples/custom_prefix_characters.cpp
index 01e248a..9f8917a 100644
--- a/samples/custom_prefix_characters.cpp
+++ b/samples/custom_prefix_characters.cpp
@@ -16,7 +16,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   if (program.is_used("+f")) {
diff --git a/samples/gathering_remaining_arguments.cpp b/samples/gathering_remaining_arguments.cpp
index 4f40454..be13f10 100644
--- a/samples/gathering_remaining_arguments.cpp
+++ b/samples/gathering_remaining_arguments.cpp
@@ -12,7 +12,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   try {
diff --git a/samples/is_used.cpp b/samples/is_used.cpp
index 27e0373..ffc05f8 100644
--- a/samples/is_used.cpp
+++ b/samples/is_used.cpp
@@ -16,7 +16,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   auto color = program.get<std::string>("--color"); // "orange"
diff --git a/samples/joining_repeated_optional_arguments.cpp b/samples/joining_repeated_optional_arguments.cpp
index eebbdc6..0f6ab81 100644
--- a/samples/joining_repeated_optional_arguments.cpp
+++ b/samples/joining_repeated_optional_arguments.cpp
@@ -16,7 +16,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   auto colors = program.get<std::vector<std::string>>(
diff --git a/samples/list_of_arguments.cpp b/samples/list_of_arguments.cpp
index e533e47..996e748 100644
--- a/samples/list_of_arguments.cpp
+++ b/samples/list_of_arguments.cpp
@@ -16,7 +16,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   auto files = program.get<std::vector<std::string>>(
diff --git a/samples/negative_numbers.cpp b/samples/negative_numbers.cpp
index ac4284f..319245f 100644
--- a/samples/negative_numbers.cpp
+++ b/samples/negative_numbers.cpp
@@ -17,7 +17,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   if (program.is_used("integer")) {
diff --git a/samples/optional_flag_argument.cpp b/samples/optional_flag_argument.cpp
index 2f85954..f935ecf 100644
--- a/samples/optional_flag_argument.cpp
+++ b/samples/optional_flag_argument.cpp
@@ -15,7 +15,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   if (program["--verbose"] == true) {
diff --git a/samples/positional_argument.cpp b/samples/positional_argument.cpp
index 03ffb0a..4343863 100644
--- a/samples/positional_argument.cpp
+++ b/samples/positional_argument.cpp
@@ -16,7 +16,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   int input = program.get<int>("square");
diff --git a/samples/required_optional_argument.cpp b/samples/required_optional_argument.cpp
index efea523..0271f50 100644
--- a/samples/required_optional_argument.cpp
+++ b/samples/required_optional_argument.cpp
@@ -14,7 +14,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   std::cout << "Output written to " << program.get("-o") << "\n";
diff --git a/samples/subcommands.cpp b/samples/subcommands.cpp
index 74d610e..ba1059d 100644
--- a/samples/subcommands.cpp
+++ b/samples/subcommands.cpp
@@ -60,7 +60,7 @@ int main(int argc, char *argv[]) {
   } catch (const std::runtime_error &err) {
     std::cerr << err.what() << std::endl;
     std::cerr << program;
-    std::exit(1);
+    return 1;
   }
 
   // Use arguments